Merged revisions 245729 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r245729 | tilghman | 2010-02-09 12:06:30 -0600 (Tue, 09 Feb 2010) | 8 lines
  
  Ensure frames are only freed once.
  
  (closes issue #16361)
   Reported by: vlad
   Patches: 
         20100208__issue16361.diff.txt uploaded by tilghman (license 14)
   Tested by: kenny, bloodoff, misaksen
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@245731 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_fax.c

@@ -516,6 +516,7 @@ static int transmit_audio(fax_session *s)
 		}
 
 		ast_frfree(inf);
+		inf = NULL;
 	}
 
 	ast_debug(1, "Loop finished, res=%d\n", res);