BUG/MINOR: http-act: Set stream error flag before returning an error

In action_http_set_status(), when a rewrite error occurred, the stream error
flag must be set before returning the error.

No need to backport this patch except if commit 333bf8c33 ("MINOR: http-rules:
Set SF_ERR_PRXCOND termination flag when a header rewrite fails") is
backported. This bug was reported in issue #491.
1 file changed