From 1bbec5d7cdaaba2f074074435967f65e1242fe90 Mon Sep 17 00:00:00 2001
From: Per Osbeck <per.osbeck@digitaslbi.com>
Date: Thu, 26 Mar 2015 08:59:49 +0100
Subject: [PATCH] Dont throw exeption if querystring is null

Former-commit-id: 6f6e583f72a7b4ca6f3623593e9c7061875e3001
Former-commit-id: 6494bc5f366c478032c1c130d87d5bae13638a3d
---
 src/ImageProcessor.Web/Helpers/ImageHelpers.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/ImageProcessor.Web/Helpers/ImageHelpers.cs b/src/ImageProcessor.Web/Helpers/ImageHelpers.cs
index d53adf88b..b09ff16b4 100644
--- a/src/ImageProcessor.Web/Helpers/ImageHelpers.cs
+++ b/src/ImageProcessor.Web/Helpers/ImageHelpers.cs
@@ -78,7 +78,12 @@ namespace ImageProcessor.Web.Helpers
             {
                 // Test against the path minus the querystring so any other
                 // processors don't interere.
-                string trimmed = fullPath.Replace(queryString, string.Empty);
+                string trimmed = fullPath;
+                if (queryString != null)
+                {
+                    trimmed = trimmed.Replace(queryString, string.Empty);
+                }
+                
                 match = FormatRegex.Match(trimmed);
             }