res_rtp_asterisk: Make the ICE transport check case insensitive as some implementations use 'udp'.

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Merged revisions 425360 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 425361 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@425362 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_rtp_asterisk.c

@@ -522,7 +522,7 @@ static void ast_rtp_ice_add_remote_candidate(struct ast_rtp_instance *instance,
 	struct ast_rtp_engine_ice_candidate *remote_candidate;
 
 	/* ICE sessions only support UDP candidates */
-	if (strcmp(candidate->transport, "UDP")) {
+	if (strcasecmp(candidate->transport, "udp")) {
 		return;
 	}