Explicitly return NULL when it's a pointer (even though 0 works).

7edfb217 · Geoff Simmons · 1ccec57c · 7edfb217
Commit 7edfb217 authored Apr 22, 2021 by Geoff Simmons
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set.c src/set.c +1 -1

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--- a/src/set.c
+++ b/src/set.c
@@ -771,7 +771,7 @@ vmod_set_subroutine(VRT_CTX, struct VPFX(re2_set) *set, VCL_INT n,

 	idx = get_match_idx(ctx, set, n, selects, "subroutine");
 	if (idx < 0)
-		return (0);
+		return (NULL);
 	if (!vbit_test(set->added[SUBROUTINE], idx)) {
 		AN(selects);
 		VRT_fail(ctx,