Use wxDELETE() and wxDELETEA() when possible.

Use wxDELETE[A]() functions which automatically NULL out their arguments after
deleting them instead of doing it manually.

Closes #9685.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64656 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/appbase.cpp

@@ -147,8 +147,7 @@ wxAppConsoleBase::wxAppConsoleBase()
     // In unicode mode the SetTraceMasks call can cause an apptraits to be
     // created, but since we are still in the constructor the wrong kind will
     // be created for GUI apps.  Destroy it so it can be created again later.
-    delete m_traits;
-    m_traits = NULL;
+    wxDELETE(m_traits);
 #endif
 #endif
 }
@@ -214,11 +213,7 @@ wxEventLoopBase *wxAppConsoleBase::CreateMainLoop()
 
 void wxAppConsoleBase::CleanUp()
 {
-    if ( m_mainLoop )
-    {
-        delete m_mainLoop;
-        m_mainLoop = NULL;
-    }
+    wxDELETE(m_mainLoop);
 }
 
 // ----------------------------------------------------------------------------