From b25b4576e3fd889b3edadb51ff9a387ef0bae653 Mon Sep 17 00:00:00 2001
From: Leon Henrik Plickat <leonhenrik.plickat@stud.uni-goettingen.de>
Date: Tue, 22 Sep 2020 13:39:03 +0200
Subject: [PATCH] Correctly abort when launched with invalid URL

The return value of set_url() was not checked, meaning that when it
failed, gmnlm continued anyway, causing an assertion to fail and
subsequentially resulting in a segfault.
---
 src/gmnlm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gmnlm.c b/src/gmnlm.c
index 756520c..02d8829 100644
--- a/src/gmnlm.c
+++ b/src/gmnlm.c
@@ -797,7 +797,9 @@ main(int argc, char *argv[])
 	}
 
 	if (optind == argc - 1) {
-		set_url(&browser, argv[optind], &browser.history);
+		if (!set_url(&browser, argv[optind], &browser.history)) {
+			return 1;
+		}
 	} else {
 		usage(argv[0]);
 		return 1;