define wxMiniFrame at least somehow if the current port doesn't define it

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43031 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/minifram.h

@@ -30,6 +30,11 @@
 #include "wx/mac/minifram.h"
 #elif defined(__WXPM__)
 #include "wx/os2/minifram.h"
+#else
+// TODO: it seems that wxMiniFrame could be just defined here generically
+//       instead of having all the above port-specific headers
+#include "wx/frame.h"
+typedef wxFrame wxMiniFrame;
 #endif
 
 #endif