Add missing checks into gui.

6 files changed, 25 insertions, 31 deletions

diff --git a/src/gui/windows/buydialog.cpp b/src/gui/windows/buydialog.cpp
index 3b3657272..84a7a1182 100644
--- a/src/gui/windows/buydialog.cpp
+++ b/src/gui/windows/buydialog.cpp
@@ -488,6 +488,8 @@ void BuyDialog::action(const ActionEvent &event)
     else if (eventId == "buy" && mAmountItems > 0 && mAmountItems <= mMaxItems)
     {
         ShopItem *const item = mShopItems->at(selectedItem);
+        if (!item)
+            return;
         if (mNpcId == fromInt(Items, BeingId))
         {
             adminHandler->createItems(item->getId(),
@@ -544,13 +546,10 @@ void BuyDialog::action(const ActionEvent &event)
             if (tradeWindow)
 #endif
             {
-                if (item)
-                {
-                    buySellHandler->sendBuyRequest(mNick,
-                        item, mAmountItems);
-                    tradeWindow->addAutoMoney(mNick,
-                        item->getPrice() * mAmountItems);
-                }
+                buySellHandler->sendBuyRequest(mNick,
+                    item, mAmountItems);
+                tradeWindow->addAutoMoney(mNick,
+                    item->getPrice() * mAmountItems);
             }
         }
     }
diff --git a/src/gui/windows/chatwindow.cpp b/src/gui/windows/chatwindow.cpp
index 3f26cc4dc..f7a101a44 100644
--- a/src/gui/windows/chatwindow.cpp
+++ b/src/gui/windows/chatwindow.cpp
@@ -692,11 +692,11 @@ void ChatWindow::mousePressed(MouseEvent &event)
     {
         if (popupMenu)
         {
-            Tab *const tab = mChatTabs->getSelectedTab();
-            if (tab)
+            ChatTab *const cTab = dynamic_cast<ChatTab*>(
+                mChatTabs->getSelectedTab());
+            if (cTab)
             {
                 event.consume();
-                ChatTab *const cTab = dynamic_cast<ChatTab*>(tab);
                 if (inputManager.isActionActive(InputAction::CHAT_MOD))
                 {
                     inputManager.executeChatCommand(
@@ -2163,11 +2163,14 @@ void ChatWindow::showGMTab()
 void ChatWindow::joinRoom(const bool isJoin)
 {
     Tab *const tab = mChatTabs->getTabByIndex(0);
-    std::string name;
-    if (isJoin)
-        name = PlayerInfo::getRoomName();
-    else
-        name = _("General");
-    tab->setCaption(name);
+    if (tab)
+    {
+        std::string name;
+        if (isJoin)
+            name = PlayerInfo::getRoomName();
+        else
+            name = _("General");
+        tab->setCaption(name);
+    }
 }
 #endif
diff --git a/src/gui/windows/minimap.cpp b/src/gui/windows/minimap.cpp
index 9e2cb4b81..502ebf91a 100644
--- a/src/gui/windows/minimap.cpp
+++ b/src/gui/windows/minimap.cpp
@@ -393,7 +393,7 @@ void Minimap::draw2(Graphics *const graphics)
             const PartyMember *const m = party->getMember(
                 localPlayer->getName());
             const Party::MemberList *const members = party->getMembers();
-            if (m && members)
+            if (m)
             {
                 const std::string curMap = m->getMap();
                 Party::MemberList::const_iterator it = members->begin();
diff --git a/src/gui/windows/skilldialog.cpp b/src/gui/windows/skilldialog.cpp
index 8997220f1..89b614e8d 100644
--- a/src/gui/windows/skilldialog.cpp
+++ b/src/gui/windows/skilldialog.cpp
@@ -337,7 +337,7 @@ void SkillDialog::loadXmlFile(const std::string &fileName)
                         ? 0 : XML::getProperty(node, "level", 0);
                     SkillData *data = skill->getData(level);
                     if (!data)
-                        data = new SkillData();
+                        data = new SkillData;
 
                     data->name = name;
                     data->setIcon(icon);
diff --git a/src/gui/windows/statuswindow.cpp b/src/gui/windows/statuswindow.cpp
index ed7438736..5f8df4ef7 100644
--- a/src/gui/windows/statuswindow.cpp
+++ b/src/gui/windows/statuswindow.cpp
@@ -633,7 +633,7 @@ std::string StatusWindow::translateLetter(const char *const letters)
 {
     char buf[2];
     char *const str = gettext(letters);
-    if (strlen(str) != 3)
+    if (!str || strlen(str) != 3)
         return letters;
 
     buf[0] = str[1];
diff --git a/src/gui/windows/textdialog.cpp b/src/gui/windows/textdialog.cpp
index 642d574cc..0d74c95e5 100644
--- a/src/gui/windows/textdialog.cpp
+++ b/src/gui/windows/textdialog.cpp
@@ -68,18 +68,10 @@ TextDialog::TextDialog(const std::string &restrict title,
     place(2, 2, mOkButton);
     place(3, 2, cancelButton);
 
-    const Font *const font = getFont();
-    if (font)
-    {
-        int width = font->getWidth(title);
-        if (width < textLabel->getWidth())
-            width = textLabel->getWidth();
-        reflowLayout(static_cast<int>(width + 20));
-    }
-    else
-    {
-        reflowLayout(static_cast<int>(textLabel->getWidth() + 20));
-    }
+    int width = getFont()->getWidth(title);
+    if (width < textLabel->getWidth())
+        width = textLabel->getWidth();
+    reflowLayout(static_cast<int>(width + 20));
 }
 
 void TextDialog::postInit()