ExtendedGitHubClient.java

- no longer set the HTTP method to PATCH but use the X-HTTP-Method-Override header, as the jdk's HttpURLConnection does not like the PATCH method

This fixes jenkinsci#41

Author: aaronjwhiteside

src/main/java/org/jenkinsci/plugins/pipeline/github/client/ExtendedGitHubClient.java

@@ -31,7 +31,9 @@ public <V> V patch(final String uri, final Object params, final Type type) {
 
     public <V> V patch(final String uri, final Object params, final Type type, final String accept) {
         try {
-            final HttpURLConnection request = createPatch(uri);
+            final HttpURLConnection request = createPost(uri);
+            request.setRequestProperty("X-HTTP-Method-Override", "PATCH");
+
             if (accept != null) {
                 request.setRequestProperty("Accept", accept);
             }
@@ -41,10 +43,6 @@ public <V> V patch(final String uri, final Object params, final Type type, final
         }
     }
 
-    protected HttpURLConnection createPatch(final String uri) throws IOException {
-        return this.createConnection(uri, "PATCH");
-    }
-
     public <V> V post(final String uri, final Object params, final Type type, final String accept) throws IOException {
         HttpURLConnection request = this.createPost(uri);
         if (accept != null) {