From 2367abe67dae4076ae178a03940daefc42441e49 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Thu, 17 Jul 2014 02:55:13 -0700
Subject: [PATCH] Don't crash if no ROM is loaded

---
 src/gba/gba-thread.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/gba/gba-thread.c b/src/gba/gba-thread.c
index 8ec00c405..fe31aafc0 100644
--- a/src/gba/gba-thread.c
+++ b/src/gba/gba-thread.c
@@ -201,7 +201,7 @@ bool GBAThreadStart(struct GBAThread* threadContext) {
 		threadContext->rewindBuffer = 0;
 	}
 
-	if (!GBAIsROM(threadContext->rom)) {
+	if (threadContext->rom && !GBAIsROM(threadContext->rom)) {
 		threadContext->rom->close(threadContext->rom);
 		threadContext->rom = 0;
 	}
@@ -226,6 +226,10 @@ bool GBAThreadStart(struct GBAThread* threadContext) {
 		}
 	}
 
+	if (!threadContext->rom) {
+		return false;
+	}
+
 	if (threadContext->fname && !threadContext->save) {
 		char* savedata = 0;
 		char* dotPoint = strrchr(threadContext->fname, '.');