From 99bc0fa17fdfd0a28cbaeee6b91069a12fd66d70 Mon Sep 17 00:00:00 2001
From: harry <hrosen2016@gmail.com>
Date: Mon, 24 Apr 2023 23:14:43 -0400
Subject: [PATCH] Add nullptr check to ensure that libarchive version strings
 are valid before printing. They will be null when a particular format or
 filter is not supported.

---
 src/drivers/Qt/AboutWindow.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/drivers/Qt/AboutWindow.cpp b/src/drivers/Qt/AboutWindow.cpp
index 5c8fa539..20719222 100644
--- a/src/drivers/Qt/AboutWindow.cpp
+++ b/src/drivers/Qt/AboutWindow.cpp
@@ -215,8 +215,12 @@ AboutWindow::AboutWindow(QWidget *parent)
 	i=0;
 	while (libArcName[i])
 	{
-		sprintf( stmp, "		%s %s\n", libArcName[i], libArcVersion[i]); i++;
-		credits->insertPlainText( stmp );
+		if (libArcVersion[i])
+		{
+			sprintf( stmp, "		%s %s\n", libArcName[i], libArcVersion[i]);
+			credits->insertPlainText( stmp );
+		}
+		i++;
 	}
 #endif