ARC GCD Crash

crashQueue.m

-(void)crashQueue {
  dispatch_queue_t webviewQueue = dispatch_queue_create("de.company.myCrashQueue", DISPATCH_QUEUE_SERIAL);
  _webviewQueueValid = YES;
	
// NSLog(self.company);
  dispatch_async(webviewQueue, ^{
    if (_webviewQueueValid) {
      NSURL *companyURL = [NSURL URLWithString:[companyURI stringByAppendingFormat:@"%@.html", self.company.pathName]];
      NSMutableURLRequest *requestCompany = [NSMutableURLRequest requestWithURL:companyURL];
      [self.companyWebView loadRequest:requestCompany];
    }
  });
}