From c559773d005d606da64d368985fa601f2ca32464 Mon Sep 17 00:00:00 2001
From: Giovanni Mascellani <gmascellani@codeweavers.com>
Date: Fri, 6 Nov 2020 17:42:21 +0100
Subject: [PATCH] lsteamclient: Allow callbacks to be NULL

Steamworks API seems to accept NULL callbacks, simply avoiding to call
them when this is the case.
---
 lsteamclient/steamclient_wrappers.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lsteamclient/steamclient_wrappers.c b/lsteamclient/steamclient_wrappers.c
index a7f2b1c6..8e29c2c6 100644
--- a/lsteamclient/steamclient_wrappers.c
+++ b/lsteamclient/steamclient_wrappers.c
@@ -113,6 +113,9 @@ void *create_LinuxISteamMatchmakingServerListResponse(void *win, const char *ver
 {
     struct gccServerListResponse *ret;
 
+    if (!win)
+        return NULL;
+
     /* FIXME: When is it save to free this? CancelServerQuery? */
     ret = (struct gccServerListResponse *)HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
     if(!ret)
@@ -163,6 +166,9 @@ void *create_LinuxISteamMatchmakingPingResponse(void *win, const char *version)
 {
     struct gccPingResponse *ret;
 
+    if (!win)
+        return NULL;
+
     ret = (struct gccPingResponse *)HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
     if(!ret)
         return NULL;
@@ -217,6 +223,9 @@ void *create_LinuxISteamMatchmakingPlayersResponse(void *win, const char *versio
 {
     struct gccPlayersResponse *ret;
 
+    if (!win)
+        return NULL;
+
     ret = (struct gccPlayersResponse *)HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
     if(!ret)
         return NULL;
@@ -271,6 +280,9 @@ void *create_LinuxISteamMatchmakingRulesResponse(void *win, const char *version)
 {
     struct gccRulesResponse *ret;
 
+    if (!win)
+        return NULL;
+
     ret = (struct gccRulesResponse *)HeapAlloc(GetProcessHeap(), 0, sizeof(*ret));
     if(!ret)
         return NULL;