Suggested IAX and IAX2 bugfixes

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1038 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax.c

@@ -4841,6 +4841,7 @@ static struct iax_dpcache *find_cache(struct ast_channel *chan, char *data, char
 		/* We found an entry that matches us! */
 		if (!strcmp(dp->peercontext, data) && !strcmp(dp->exten, exten)) 
 			break;
+		prev = dp;
 		dp = next;
 	}
 	if (!dp) {

channels/chan_iax2.c

@@ -5224,6 +5224,7 @@ static struct iax2_dpcache *find_cache(struct ast_channel *chan, char *data, cha
 		/* We found an entry that matches us! */
 		if (!strcmp(dp->peercontext, data) && !strcmp(dp->exten, exten)) 
 			break;
+		perv = dp;
 		dp = next;
 	}
 	if (!dp) {
@@ -5495,6 +5496,7 @@ int load_module(void)
 
 	ast_pthread_mutex_init(&iaxq.lock);
 	ast_pthread_mutex_init(&userl.lock);
+	ast_pthread_mutex_init(&peerl.lock);
 
 	ast_cli_register(&cli_show_users);
 	ast_cli_register(&cli_show_channels);