Ignore running command when checking for no-hooks flag if it is blocked.

GitHub issue 2483.

cmd-queue.c

@@ -768,7 +768,11 @@ cmdq_running(struct client *c)
 {
 	struct cmdq_list	*queue = cmdq_get(c);
 
-	return (queue->item);
+	if (queue->item == NULL)
+        return (NULL);
+    if (queue->item->flags & CMDQ_WAITING)
+        return (NULL);
+    return (queue->item);
 }
 
 /* Print a guard line. */

tmux.1

@@ -2112,7 +2112,8 @@ and
 .Ic display-panes-active-colour
 session options.
 The indicator is closed when a key is pressed (unless
-.Fl N is given) or
+.Fl N
+is given) or
 .Ar duration
 milliseconds have passed.
 If