fix: while we see partial matches, we can not yet enable NOTBOL

src/vmod_re.c

@@ -435,19 +435,6 @@ match_iter_f(void *priv, unsigned flush, const void *ptr, ssize_t len)
 	     reip->s, len, subject, len);
 #endif
 
-	reip->options |= PCRE2_NOTBOL;
-
-	if (reip->s < PCRE2_ERROR_PARTIAL)
-		return (1);
-
-	if (reip->s == PCRE2_ERROR_NOMATCH) {
-		reip->startoffset = 0;
-		reip->b = 0;
-		reip->e = 0;
-
-		return (0);
-	}
-
 	CAST_OBJ_NOTNULL(ov, reip->task->priv, OV_MAGIC);
 
 	if (reip->s == PCRE2_ERROR_PARTIAL && reip->b != NULL)
@@ -468,6 +455,19 @@ match_iter_f(void *priv, unsigned flush, const void *ptr, ssize_t len)
 		return (0);
 	}
 
+	reip->options |= PCRE2_NOTBOL;
+
+	if (reip->s < PCRE2_ERROR_PARTIAL)
+		return (1);
+
+	if (reip->s == PCRE2_ERROR_NOMATCH) {
+		reip->startoffset = 0;
+		reip->b = 0;
+		reip->e = 0;
+
+		return (0);
+	}
+
 	assert(reip->s > PCRE2_ERROR_NOMATCH);
 
 	if (reip->b == NULL && (flush & OBJ_ITER_FLUSH) == 0) {