ensure that one of wxRA_SPECIFY_{COLS,ROWS} is set in the radiobox style, otherwise layout code doesn't work correctly and this can easily happen if the radiobox is created from an XRC file not specifying its style at all

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@54927 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/radiobox.cpp

@@ -149,6 +149,11 @@ bool wxRadioBox::Create(wxWindow *parent,
     if ( !wxStaticBox::Create(parent, id, title, pos, size, style, name) )
         return false;
 
+    // the code elsewhere in this file supposes that either wxRA_SPECIFY_COLS
+    // or wxRA_SPECIFY_ROWS is set, ensure that this is indeed the case
+    if ( !(style & (wxRA_SPECIFY_ROWS | wxRA_SPECIFY_COLS)) )
+        style |= wxRA_SPECIFY_COLS;
+
 #if wxUSE_VALIDATORS
     SetValidator(val);
 #else