Check pvt structure presence before passing to send_command. This gets rid of the irritating message about a packet without pvt structure. This happens because the scheduled item is getting cancelled at almost the exact moment it is getting executed.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@49259 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -915,7 +915,10 @@ static int __schedule_action(void (*func)(void *data), void *data, const char *f
 static void __send_ping(void *data)
 {
 	int callno = (long)data;
-	send_command_locked(callno, AST_FRAME_IAX, IAX_COMMAND_PING, 0, NULL, 0, -1);
+	ast_mutex_lock(&iaxsl[callno]);
+	if (iaxs[callno])
+		send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_PING, 0, NULL, 0, -1);
+	ast_mutex_unlock(&iaxsl[callno]);
 }
 
 static int send_ping(void *data)
@@ -948,7 +951,10 @@ static void __send_lagrq(void *data)
 {
 	int callno = (long)data;
 	/* Ping only if it's real not if it's bridged */
-	send_command_locked(callno, AST_FRAME_IAX, IAX_COMMAND_LAGRQ, 0, NULL, 0, -1);
+	ast_mutex_lock(&iaxsl[callno]);
+	if (iaxs[callno])
+		send_command(iaxs[callno], AST_FRAME_IAX, IAX_COMMAND_LAGRQ, 0, NULL, 0, -1);
+	ast_mutex_unlock(&iaxsl[callno]);
 }
 
 static int send_lagrq(void *data)