From f976c2e27bc2901b95e7ac00bb677b12db76c2cf Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Sat, 3 May 2014 17:48:49 +0000
Subject: [PATCH] another fix to dual gameboy mnemonics, the method can
 correctly accept an empty string, so check for it before indexing

---
 BizHawk.Client.Common/movie/MovieMnemonics.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/BizHawk.Client.Common/movie/MovieMnemonics.cs b/BizHawk.Client.Common/movie/MovieMnemonics.cs
index 528c07274c..35fa4dc1d1 100644
--- a/BizHawk.Client.Common/movie/MovieMnemonics.cs
+++ b/BizHawk.Client.Common/movie/MovieMnemonics.cs
@@ -232,6 +232,11 @@ namespace BizHawk.Client.Common
 			{
 				get
 				{
+					if (string.IsNullOrEmpty(_mnemonic))
+					{
+						return false;
+					}
+
 					if (_mnemonic[c] == '.')
 					{
 						return false;