From 56c3360ec8455ce31af96864012c8cd9f0e0f3dd Mon Sep 17 00:00:00 2001
From: zeromus <zeromus@users.noreply.github.com>
Date: Tue, 29 Sep 2015 02:27:06 -0500
Subject: [PATCH] minor tweax

---
 BizHawk.Common/Extensions/StringExtensions.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/BizHawk.Common/Extensions/StringExtensions.cs b/BizHawk.Common/Extensions/StringExtensions.cs
index 42559db846..8b4dc857ca 100644
--- a/BizHawk.Common/Extensions/StringExtensions.cs
+++ b/BizHawk.Common/Extensions/StringExtensions.cs
@@ -146,7 +146,7 @@ namespace BizHawk.Common.StringExtensions
 				return true;
 			}
 
-			return char.ToUpper(c) >= 'A' && char.ToUpper(c) <= 'F';
+			return char.ToUpperInvariant(c) >= 'A' && char.ToUpperInvariant(c) <= 'F';
 		}
 
 		/// <summary>
@@ -303,7 +303,7 @@ namespace BizHawk.Common.StringExtensions
 				return string.Empty;
 			}
 
-			var output = new StringBuilder();
+			var output = new StringBuilder(raw.Length);
 
 			foreach (var chr in raw)
 			{