[3.0] 37b7329 Add a missing WS_Release()

[Tollef Fog Heen]

commit 37b7329b312d45525d12cded3565e1c2e113fd29
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue Nov 8 14:50:11 2011 +0000

    Add a missing WS_Release()

diff --git a/bin/varnishd/cache_vrt_re.c b/bin/varnishd/cache_vrt_re.c
index fe6b814..f2db178 100644
--- a/bin/varnishd/cache_vrt_re.c
+++ b/bin/varnishd/cache_vrt_re.c
@@ -148,6 +148,7 @@ VRT_regsub(const struct sess *sp, int all, const char *str, void *re,
 		i = VRE_exec(t, str, len, 0, options, ovector, 30,
 		    &params->vre_limits);
 		if (i < VRE_ERROR_NOMATCH ) {
+			WS_Release(sp->http->ws, 0);
 			WSP(sp, SLT_VCL_error,
 			    "Regexp matching returned %d", i);
 			return(str);