From e896f3126b5f6f96eaab9e701a2f93baa6cd7f9e Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Mon, 15 Feb 2016 15:51:52 -0700
Subject: [PATCH] entities.c: make SetWorldKeyValue / WorldKeyValue safer

---
 light/entities.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/light/entities.c b/light/entities.c
index e5fbbdae..85d4d786 100644
--- a/light/entities.c
+++ b/light/entities.c
@@ -77,13 +77,21 @@ SetKeyValue(entity_t *ent, const char *key, const char *value)
     strcpy(ep->value, value);
 }
 
+static entity_t *WorldEnt()
+{
+    if (0 != strcmp("worldspawn", ValueForKey(entities, "classname"))) {
+        Error("WorldEnt() failed to get worldspawn");
+    }
+    return entities;
+}
+
 void SetWorldKeyValue(const char *key, const char *value)
 {
-        SetKeyValue(entities, key, value);
+    SetKeyValue(WorldEnt(), key, value);
 }
 const char *WorldValueForKey(const char *key)
 {
-        return ValueForKey(entities, key);
+    return ValueForKey(WorldEnt(), key);
 }
 
 static int