From 968cd6d601cca1c94f813a677567af21d86a1f5c Mon Sep 17 00:00:00 2001
From: Mr_Goldberg <gold@berg>
Date: Sun, 26 May 2019 13:46:43 -0400
Subject: [PATCH] Only call server request callback if not NULL.

---
 dll/steam_matchmaking_servers.cpp | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/dll/steam_matchmaking_servers.cpp b/dll/steam_matchmaking_servers.cpp
index ce3e789a..72cdb015 100644
--- a/dll/steam_matchmaking_servers.cpp
+++ b/dll/steam_matchmaking_servers.cpp
@@ -424,16 +424,18 @@ void Steam_Matchmaking_Servers::RunCallbacks()
         if (r.cancelled || r.completed) continue;
         int i = 0;
 
-        for (auto &g : r.gameservers_filtered) {
-            PRINT_DEBUG("REQUESTS server responded cb %p\n", r.id);
-            r.callbacks->ServerResponded(r.id, i);
-            ++i;
-        }
+        if (r.callbacks) {
+            for (auto &g : r.gameservers_filtered) {
+                PRINT_DEBUG("REQUESTS server responded cb %p\n", r.id);
+                r.callbacks->ServerResponded(r.id, i);
+                ++i;
+            }
 
-        if (i) {
-            r.callbacks->RefreshComplete(r.id, eServerResponded);
-        } else {
-            r.callbacks->RefreshComplete(r.id, eNoServersListedOnMasterServer);
+            if (i) {
+                r.callbacks->RefreshComplete(r.id, eServerResponded);
+            } else {
+                r.callbacks->RefreshComplete(r.id, eNoServersListedOnMasterServer);
+            }
         }
     }