remove trailing spaces

This is done by `sed -i -e 's/[ \t]*$//' *.[c,h]`, which should not
introduce any functionality change.

xdgmime.h

@@ -2,13 +2,13 @@
 /* xdgmime.h: XDG Mime Spec mime resolver.  Based on version 0.11 of the spec.
  *
  * More info can be found at http://www.freedesktop.org/standards/
- * 
+ *
  * Copyright (C) 2003  Red Hat, Inc.
  * Copyright (C) 2003  Jonathan Blandford <jrb@alum.mit.edu>
  *
  * Licensed under the Academic Free License version 2.0
  * Or under the following terms:
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ -44,7 +44,7 @@ extern "C" {
 typedef void (*XdgMimeCallback) (void *user_data);
 typedef void (*XdgMimeDestroy)  (void *user_data);
 
-  
+
 #ifdef XDG_PREFIX
 #define xdg_mime_get_mime_type_for_data       XDG_ENTRY(get_mime_type_for_data)
 #define xdg_mime_get_mime_type_for_file       XDG_ENTRY(get_mime_type_for_file)