[master] 1c4d04f68 Dont pass empty strings to VSB_quote()

[Poul-Henning Kamp]

commit 1c4d04f68c7d5fe817ff327a8ffefcf7a60e3a02
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Mar 1 09:15:06 2021 +0000

    Dont pass empty strings to VSB_quote()

diff --git a/bin/varnishstat/varnishstat_help_gen.c b/bin/varnishstat/varnishstat_help_gen.c
index 1412ea992..bef1ebb6e 100644
--- a/bin/varnishstat/varnishstat_help_gen.c
+++ b/bin/varnishstat/varnishstat_help_gen.c
@@ -69,7 +69,7 @@ main(void)
 	do {
 		p = n + 1;
 		n = strchr(p, '\n');
-		if (n != NULL) {
+		if (n != NULL && n > p) {
 			VSB_putc(vsb, '\t');
 			VSB_quote(vsb, p, (int)(n - p), VSB_QUOTE_CSTR);
 			VSB_cat(vsb, ",\n");