use a macro instead of an inline function, so that backtraces will report the caller of ast_frame_free() properly

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@85195 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/frame.h

@@ -385,10 +385,7 @@ struct ast_frame *ast_fralloc(char *source, int len);
  */
 void ast_frame_free(struct ast_frame *fr, int cache);
 
-static void force_inline ast_frfree(struct ast_frame *fr)
-{
-	ast_frame_free(fr, 1);
-}
+#define ast_frfree(fr) ast_frame_free(fr, 1)
 
 /*! \brief Makes a frame independent of any static storage
  * \param fr frame to act upon