Fixes crashes

src/plugins/projectexplorer/buildsettingspropertiespage.cpp

@@ -73,7 +73,7 @@ BuildSettingsPanel::BuildSettingsPanel(Project *project)
 
 BuildSettingsPanel::~BuildSettingsPanel()
 {
-    delete m_widget;
+
 }
 
 QString BuildSettingsPanel::name() const

src/plugins/projectexplorer/dependenciespanel.cpp

@@ -283,7 +283,7 @@ DependenciesPanel::DependenciesPanel(SessionManager *session, Project *project)
 
 DependenciesPanel::~DependenciesPanel()
 {
-    delete m_widget;
+
 }
 
 QString DependenciesPanel::name() const

src/plugins/projectexplorer/editorsettingspropertiespage.cpp

@@ -55,7 +55,7 @@ EditorSettingsPanel::EditorSettingsPanel(Project *project)
 
 EditorSettingsPanel::~EditorSettingsPanel()
 {
-    delete m_widget;
+
 }
 
 QString EditorSettingsPanel::name() const

src/plugins/projectexplorer/runsettingspropertiespage.cpp

@@ -111,7 +111,7 @@ RunSettingsPanel::RunSettingsPanel(Project *project)
 
 RunSettingsPanel::~RunSettingsPanel()
 {
-    delete m_widget;
+
 }
 
 QString RunSettingsPanel::name() const