Fixed bug in --retina option

Author: shazron

Source/iPhoneSimulator.m

@@ -363,7 +363,6 @@ - (void)runWithArgc:(int)argc argv:(char **)argv {
         NSLog(@"stderrPath: %@", stderrPath);
       } else if (strcmp(argv[i], "--retina") == 0) {
           retinaDevice = YES;
-          i++;
       } else if (strcmp(argv[i], "--args") == 0) {
         i++;
         break;