Add missing const.

4 files changed, 9 insertions, 12 deletions

diff --git a/src/gui/widgets/itemcontainer.h b/src/gui/widgets/itemcontainer.h
index 06e9fd459..0fbe84da9 100644
--- a/src/gui/widgets/itemcontainer.h
+++ b/src/gui/widgets/itemcontainer.h
@@ -123,7 +123,7 @@ class ItemContainer final : public Widget,
 
         void setSortType(const int sortType);
 
-        void setName(std::string str)
+        void setName(const std::string &str)
         { mName = str; }
 
         void updateMatrix();
diff --git a/src/gui/widgets/scrollarea.cpp b/src/gui/widgets/scrollarea.cpp
index 8761e3f7d..e006302c7 100644
--- a/src/gui/widgets/scrollarea.cpp
+++ b/src/gui/widgets/scrollarea.cpp
@@ -254,16 +254,13 @@ void ScrollArea::logic()
     Widget *const content = getContent();
     if (content)
     {
-        const int frameSize = content->getFrameSize();
+        unsigned int frameSize = content->getFrameSize();
         content->setPosition(-mHScroll + frameSize, -mVScroll + frameSize);
         content->logic();
-    }
 
-    // When no scrollbar in a certain direction, adapt content size to match
-    // the content dimension exactly.
-    if (content)
-    {
-        const unsigned int frameSize = 2 * content->getFrameSize();
+        // When no scrollbar in a certain direction,
+        // adapt content size to match the content dimension exactly.
+        frameSize = 2 * content->getFrameSize();
         if (mHPolicy == ScrollArea::SHOW_NEVER)
         {
             content->setWidth((mVBarVisible ? (mDimension.width
diff --git a/src/listeners/baselistener.hpp b/src/listeners/baselistener.hpp
index 66dd0d7cf..9b089aab2 100644
--- a/src/listeners/baselistener.hpp
+++ b/src/listeners/baselistener.hpp
@@ -41,7 +41,7 @@
         mListeners.push_back(listener); \
     } \
     \
-    void name::removeListener(name *const listener) \
+    void name::removeListener(const name *const listener) \
     { \
         std::vector<name*>::iterator it = mListeners.begin(); \
         while (it != mListeners.end()) \
@@ -61,7 +61,7 @@
         \
         static void addListener(name *const listener); \
         \
-        static void removeListener(name *const listener); \
+        static void removeListener(const name *const listener); \
         \
     private: \
         static std::vector<name*> mListeners;
diff --git a/src/utils/translation/podict.h b/src/utils/translation/podict.h
index 36cf0d4af..45150d408 100644
--- a/src/utils/translation/podict.h
+++ b/src/utils/translation/podict.h
@@ -47,10 +47,10 @@ class PoDict final
         PoMap *getMap()
         { return &mPoLines; }
 
-        void set(std::string key, std::string value)
+        void set(const std::string &key, const std::string &value)
         { mPoLines[key] = value; }
 
-        void setLang(std::string lang)
+        void setLang(const std::string &lang)
         { mLang = lang; }
 
     private: