Don't attempt resumable upload if initial response failed (Issue #32)

lib/google/api_client/request.rb

@@ -165,7 +165,7 @@ module Google
 
         # Resumamble slightly different than other upload protocols in that it requires at least
         # 2 requests.
-        if self.upload_type == 'resumable'
+        if result.status == 200 && self.upload_type == 'resumable'
           upload =  result.resumable_upload
           unless upload.complete?
             logger.debug { "#{self.class} Sending upload body" }