Add missing checks into models.

3 files changed, 6 insertions, 1 deletions

diff --git a/src/gui/models/colormodel.cpp b/src/gui/models/colormodel.cpp
index 212ed5227..f7b18d300 100644
--- a/src/gui/models/colormodel.cpp
+++ b/src/gui/models/colormodel.cpp
@@ -70,6 +70,8 @@ void ColorModel::add(const std::string &name, const Color *const color1,
 ColorModel *ColorModel::createDefault(const Widget2 *const widget)
 {
     ColorModel *const model = new ColorModel();
+    if (!widget)
+        return model;
     // TRANSLATORS: color name
     addColor(_("black"), BLACK);
     // TRANSLATORS: color name
diff --git a/src/gui/models/namesmodel.cpp b/src/gui/models/namesmodel.cpp
index ed0d78269..b3137d264 100644
--- a/src/gui/models/namesmodel.cpp
+++ b/src/gui/models/namesmodel.cpp
@@ -47,6 +47,8 @@ std::string NamesModel::getElementAt(int i)
 
 void NamesModel::fillFromArray(const char *const *const arr, std::size_t sz)
 {
+    if (!arr)
+        return;
     for (size_t f = 0; f < sz; f ++)
         mNames.push_back(gettext(arr[f]));
 }
diff --git a/src/gui/models/serverslistmodel.h b/src/gui/models/serverslistmodel.h
index 864cc70c6..d3d0aec26 100644
--- a/src/gui/models/serverslistmodel.h
+++ b/src/gui/models/serverslistmodel.h
@@ -42,7 +42,8 @@ class ServersListModel final : public ListModel
         ServersListModel(ServerInfos *const servers,
                          ServerDialog *const parent) :
             mServers(servers),
-            mVersionStrings(servers->size(), VersionString(0, "")),
+            mVersionStrings(servers ? servers->size() : 0,
+                VersionString(0, "")),
             mParent(parent)
         {
         }