From cf092eb53430184dda7af90f3b63b35a53f63bbc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Rydg=C3=A5rd?= <hrydgard@gmail.com>
Date: Sun, 15 Nov 2020 23:09:10 +0100
Subject: [PATCH] Fix crash when drag-dropping texture packs. Fixes the main
 part of #13614 .

Still some weirdness going on with error checking though.
---
 UI/InstallZipScreen.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/UI/InstallZipScreen.cpp b/UI/InstallZipScreen.cpp
index 0f5f79551d..3f871e348f 100644
--- a/UI/InstallZipScreen.cpp
+++ b/UI/InstallZipScreen.cpp
@@ -116,12 +116,16 @@ void InstallZipScreen::update() {
 			progressBar_->SetVisibility(V_VISIBLE);
 			progressBar_->SetProgress(g_GameManager.GetCurrentInstallProgressPercentage());
 		}
-		backChoice_->SetEnabled(false);
+		if (backChoice_) {
+			backChoice_->SetEnabled(false);
+		}
 	} else {
 		if (progressBar_) {
 			progressBar_->SetVisibility(V_GONE);
 		}
-		backChoice_->SetEnabled(true);
+		if (backChoice_) {
+			backChoice_->SetEnabled(true);
+		}
 		std::string err = g_GameManager.GetInstallError();
 		if (!err.empty()) {
 			if (doneView_)