Revert change in revision 71656, even though it fixed a bug, because many people were depending upon the (broken) behavior.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@77782 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_agi.c

@@ -1103,7 +1103,8 @@ static int handle_exec(struct ast_channel *chan, AGI *agi, int argc, char **argv
 	}
 	fdprintf(agi->fd, "200 result=%d\n", res);
 
-	return res >= 0 ? RESULT_SUCCESS : RESULT_FAILURE;
+	/* Even though this is wrong, users are depending upon this result. */
+	return res;
 }
 
 static int handle_setcallerid(struct ast_channel *chan, AGI *agi, int argc, char **argv)