Merged revisions 250786 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r250786 | jpeeler | 2010-03-04 19:02:58 -0600 (Thu, 04 Mar 2010) | 9 lines
  
  Fix not being able to specify a URL in MOH class directory.
  
  Don't attempt to chdir on a URL!
  
  (closes issue #16875)
  Reported by: raarts
  Patches: 
        moh-http.patch uploaded by raarts (license 937)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@250787 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_musiconhold.c

@@ -560,7 +560,7 @@ static int spawn_mp3(struct mohclass *class)
 		ast_close_fds_above_n(STDERR_FILENO);
 
 		/* Child */
-		if (strcasecmp(class->dir, "nodir") && chdir(class->dir) < 0) {
+		if (strncasecmp(class->dir, "http://", 7) && strcasecmp(class->dir, "nodir") && chdir(class->dir) < 0) {
 			ast_log(LOG_WARNING, "chdir() failed: %s\n", strerror(errno));
 			_exit(1);
 		}