Strip trailing whitespace. Refs #614

Tests/Logic/Network/RKRequestTest.m

@@ -977,7 +977,7 @@ request.timeoutInterval = 1.0;
 - (void)testUnavailabilityOfResponseInDidFailWithErrorCallback {
     NSURL *URL = [[NSURL alloc] initWithString:@"http://localhost:8765"];
     RKTestResponseLoader* loader = [RKTestResponseLoader responseLoader];
-    
+
     RKClient *client = [RKClient clientWithBaseURL:URL];
     RKRequest *request = [client requestWithResourcePath:@"/invalid"];
     request.method = RKRequestMethodGET;