Return after reposting BrowserChildProcessHostImpl::OnMojoError() on the right thread

content/browser/browser_child_process_host_impl.cc

Index: content/browser/browser_child_process_host_impl.cc
diff --git a/content/browser/browser_child_process_host_impl.cc b/content/browser/browser_child_process_host_impl.cc
index c9111f13740a04879e5b31dc49c85300bcee7c1c..c786b11b297cb2accdb11f6e0765ed8ad9c88d7a 100644
--- a/content/browser/browser_child_process_host_impl.cc
+++ b/content/browser/browser_child_process_host_impl.cc
@@ -585,6 +585,7 @@ void BrowserChildProcessHostImpl::OnMojoError(
     task_runner->PostTask(
         FROM_HERE, base::Bind(&BrowserChildProcessHostImpl::OnMojoError,
                               process, task_runner, error));
+    return;
   }
   if (!process)
     return;