No real changes, just add a cast to fix a warning.

Fix warning about implicitly converting -1 to CGKeyCode when building wxOSX
with 10.4 SDK.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66375 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/uiaction_osx.cpp

@@ -298,7 +298,7 @@ CGKeyCode wxCharCodeWXToOSX(wxKeyCode code)
 
         default:
             wxLogDebug( "Unrecognised keycode %d", code );
-            keycode = -1;
+            keycode = static_cast<CGKeyCode>(-1);
     }
 
     return keycode;