From 349aed4aaf0576101d034add1ffc492b2fa7354c Mon Sep 17 00:00:00 2001
From: Brad Smith <bbbradsmith@users.noreply.github.com>
Date: Mon, 12 Nov 2018 17:33:42 -0500
Subject: [PATCH] Fix null pointer crash when lua script fails to load.

---
 src/lua-engine.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lua-engine.cpp b/src/lua-engine.cpp
index f1b97ebd..7fb11b3a 100644
--- a/src/lua-engine.cpp
+++ b/src/lua-engine.cpp
@@ -6015,7 +6015,8 @@ int FCEU_LoadLuaCode(const char *filename, const char *arg) {
 #endif
 
 		// Wipe the stack. Our thread
-		lua_settop(L,0);
+		if (L)
+			lua_settop(L,0);
 		return 0; // Oh shit.
 	}
 #ifdef WIN32