Compilation fixes for Linux and old wx

Author: vslavik

src/editing_area.cpp

@@ -42,6 +42,10 @@
 #include <wx/statbmp.h>
 #include <wx/stattext.h>
 
+#if !wxCHECK_VERSION(3,1,0)
+    #define CenterVertical() Center()
+#endif
+
 #include <algorithm>
 
 

src/menus.cpp

@@ -25,7 +25,10 @@
 
 #include "menus.h"
 
+#ifdef __WXOSX__
 #include "macos_helpers.h"
+#endif
+
 #include "recent_files.h"
 #include "str_helpers.h"