Fix small memory leak.

src/wx/wxvbam.cpp

@@ -677,6 +677,7 @@ wxvbamApp::~wxvbamApp() {
 	free(home);
 	home = NULL;
     }
+    delete overrides;
 }
 
 MainFrame::MainFrame()

src/wx/wxvbam.h

@@ -79,6 +79,7 @@ public:
     wxvbamApp()
         : wxApp()
         , pending_fullscreen(false)
+        , frame(NULL)
         , using_wayland(false)
     {
     }