From 1506643f9adf04c5e6f49c3a1b5ece44efe8631d Mon Sep 17 00:00:00 2001
From: Patrick Shaughnessy <pshaughn@comcast.net>
Date: Tue, 31 Dec 2019 18:26:45 -0500
Subject: [PATCH] Now using eq_ignore_case on WASM mimetype, per #25317

---
 components/script/script_runtime.rs | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/components/script/script_runtime.rs b/components/script/script_runtime.rs
index 02a6b42b854..3f82e3496e6 100644
--- a/components/script/script_runtime.rs
+++ b/components/script/script_runtime.rs
@@ -915,16 +915,13 @@ unsafe extern "C" fn consume_stream(
         let mimetype = unwrapped_source.Headers().extract_mime_type();
 
         //Step 2.3 If mimeType is not `application/wasm`, return with a TypeError and abort these substeps.
-        match &mimetype[..] {
-            b"application/wasm" | b"APPLICATION/wasm" | b"APPLICATION/WASM" => {},
-            _ => {
-                throw_dom_exception(
-                    cx,
-                    &global,
-                    Error::Type("Response has unsupported MIME type".to_string()),
-                );
-                return false;
-            },
+        if !&mimetype[..].eq_ignore_ascii_case(b"application/wasm") {
+            throw_dom_exception(
+                cx,
+                &global,
+                Error::Type("Response has unsupported MIME type".to_string()),
+            );
+            return false;
         }
 
         //Step 2.4 If response is not CORS-same-origin, return with a TypeError and abort these substeps.