No changes whatsoever, just remove trailing whitespace.

There are no real changes in this commit but it removes all trailing white
space from our source files. This avoids problems when applying patches and
making diffs and it would be nice to prevent it from reappearing.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65680 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/button.h

@@ -110,7 +110,7 @@ public:
     void SetBitmapMargins(wxCoord x, wxCoord y) { DoSetBitmapMargins(x, y); }
     void SetBitmapMargins(const wxSize& sz) { DoSetBitmapMargins(sz.x, sz.y); }
     wxSize GetBitmapMargins() { return DoGetBitmapMargins(); }
-    
+
     // set the image position relative to the text, i.e. wxLEFT means that the
     // image is to the left of the text (this is the default)
     void SetBitmapPosition(wxDirection dir);