add comments and a test for zm_terminate in the checkCommandQueue while loop

src/zm_monitorstream.cpp

@@ -527,7 +527,8 @@ void MonitorStream::runStream() {
 
     bool was_paused = paused;
     if ( connkey ) {
-      while(checkCommandQueue()) {
+      while ( checkCommandQueue() && !zm_terminate ) {
+        // Loop in here until all commands are processed.
         Debug(2, "Have checking command Queue for connkey: %d", connkey);
         got_command = true;
       }
@@ -536,8 +537,7 @@ Debug(2, "Have checking command Queue for connkey: %d", connkey );
         touch(sock_path_lock);
         last_comm_update = now;
       }
-
-    }
+    } // end if connkey
 
     if ( paused ) {
       if ( !was_paused ) {