Removes unnecessary test and ensures getResponseHeader returns null if the header...

diff --git a/src/ajax.js b/src/ajax.js
index b903358..3d1f9a3 100644 (file)
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -295,30 +295,25 @@ jQuery.extend({
                                },
 
                                // Builds headers hashtable if needed
-                               // (match is used internally)
-                               getResponseHeader: function( key , match ) {
+                               getResponseHeader: function( key ) {
+
+                                       var match;
 
                                        if ( state === 2 ) {
 
-                                               if ( responseHeaders === undefined ) {
+                                               if ( !responseHeaders ) {
 
                                                        responseHeaders = {};
 
-                                                       if ( typeof responseHeadersString === "string" ) {
-
-                                                               while( ( match = rheaders.exec( responseHeadersString ) ) ) {
-                                                                       responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
-                                                               }
+                                                       while( ( match = rheaders.exec( responseHeadersString ) ) ) {
+                                                               responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
                                                        }
                                                }
                                                match = responseHeaders[ key.toLowerCase() ];
 
-                                       } else {
-
-                                               match = null;
                                        }
 
-                                       return match;
+                                       return match || null;
                                },
 
                                // Cancel the request