From 4b9b8547e687a583ba1261f5d9361f77c86a856d Mon Sep 17 00:00:00 2001
From: Zhiyi Zhang <zzhang@codeweavers.com>
Date: Wed, 2 Jan 2019 21:31:53 +0800
Subject: [PATCH] steamclient: Fix possible crash.

Fix a regression caused by a8968fe.

https://github.com/ValveSoftware/Proton/issues/2131

Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
---
 lsteamclient/steamclient_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lsteamclient/steamclient_main.c b/lsteamclient/steamclient_main.c
index c6898e58..344473a5 100644
--- a/lsteamclient/steamclient_main.c
+++ b/lsteamclient/steamclient_main.c
@@ -40,6 +40,9 @@ unsigned int steamclient_unix_path_to_dos_path(bool api_result, const char *src,
     WCHAR *dosW;
     uint32 r;
 
+    if(!dst || !dst_bytes)
+        return 0;
+
     if(!src || !api_result){
         *dst = 0;
         return 0;