From 608a85bf14be409af5e587b3e61782805a11fa47 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Tue, 02 Oct 2018 18:00:33 -0400
Subject: MqTabLabel: Only hide popover on close if it's shown

Fixes:

    (marquee:...): Gtk-CRITICAL **: gtk_widget_hide: assertion 'GTK_IS_WIDGET (widget)' failed
---
diff --git a/src/tab-label.c b/src/tab-label.c
index 7680532..8ada3dd 100644
--- a/src/tab-label.c
+++ b/src/tab-label.c
@@ -70,7 +70,12 @@ reload_tab_clicked_cb(GtkWidget G_GNUC_UNUSED *button, MqTabLabel *tab_label)
 static void
 close_clicked_cb(GtkWidget G_GNUC_UNUSED *button, MqTabLabel *tab_label)
 {
-	gtk_widget_hide(tab_label->popover);
+	if (tab_label->popover) {
+		/* This callback handles both the close button on the tab label
+		 * and the one on the popover.  Only hide the popover if it's
+		 * shown. */
+		gtk_widget_hide(tab_label->popover);
+	}
 	mq_tab_page_close(tab_label->tab_page);
 }
 
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