Bugfix saving match data in task scope after a match

for use by the backref/namedref functions.

src/vmod_pcre2.c

@@ -433,6 +433,9 @@ get_task(VRT_CTX, struct vmod_priv *priv_task,
 		}
 		match_task->magic = VMOD_PCRE2_TASK_MAGIC;
 		match_task->mdata = NULL;
+		priv_task->priv = match_task;
+		priv_task->len = sizeof(*match_task);
+		priv_task->free = NULL;
 	}
 	else {
 		WS_Assert_Allocated(ctx->ws, priv_task->priv,