write_error.patch

diff --git a/lib/Mojo/IOLoop/Stream.pm b/lib/Mojo/IOLoop/Stream.pm
index 62ad230..91166a8 100644
--- a/lib/Mojo/IOLoop/Stream.pm
+++ b/lib/Mojo/IOLoop/Stream.pm
@@ -122,7 +122,7 @@ sub _write {
   my $handle = $self->{handle};
   if (length $self->{buffer}) {
     my $written = $handle->syswrite($self->{buffer});
-    return $self->_error unless defined $written;
+    return unless defined $written;
     $self->emit(write => substr($self->{buffer}, 0, $written, ''))->_again;
   }