From baa1dbd80859f17dfffcb2d1d306ec7c35b7285d Mon Sep 17 00:00:00 2001
From: Jan Ziak <0xe2.0x9a.0x9b@xfce.org>
Date: Sat, 17 Dec 2022 21:40:22 +0000
Subject: [PATCH] Fix process filter crash caused by the use of an
 uninitialized variable

gtk_tree_view_get_visible_range() documentation states the following:
"Returns TRUE if valid paths were placed in start_path and end_path"

Closes: https://gitlab.xfce.org/apps/xfce4-taskmanager/-/issues/71
Fixes: 8500675125ef2d5d1835d89828154c7781291cf9
---
 src/process-window.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/process-window.c b/src/process-window.c
index e937a8e..bd16c40 100644
--- a/src/process-window.c
+++ b/src/process-window.c
@@ -268,13 +268,13 @@ xtm_process_window_unstick_view_cursor (GtkTreeView *tree_view, XtmProcessWindow
 	if (! window->view_stuck)
 		return;
 
-	gtk_tree_view_get_cursor (tree_view, &cursor, NULL);
-	gtk_tree_view_get_visible_range (tree_view, NULL, &end);
-	if (gtk_tree_path_compare (cursor, end) >= 0)
-		window->view_stuck = FALSE;
-
-	gtk_tree_path_free (cursor);
-	gtk_tree_path_free (end);
+	if (gtk_tree_view_get_visible_range (tree_view, NULL, &end)) {
+		gtk_tree_view_get_cursor (tree_view, &cursor, NULL);
+		if (cursor != NULL && gtk_tree_path_compare (cursor, end) >= 0)
+			window->view_stuck = FALSE;
+		gtk_tree_path_free (cursor);
+		gtk_tree_path_free (end);
+	}
 }
 
 static void