From 75167fb7468f4d02a99d356689f9ab9c7e13c433 Mon Sep 17 00:00:00 2001
From: Mark Andrews <marka@isc.org>
Date: Tue, 17 May 2016 17:33:59 +1000
Subject: [PATCH] silence compiler warning

---
 lib/dns/dnssec.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/dns/dnssec.c b/lib/dns/dnssec.c
index 088a87a089..b5ed301b94 100644
--- a/lib/dns/dnssec.c
+++ b/lib/dns/dnssec.c
@@ -1445,10 +1445,11 @@ dns_dnssec_findmatchingkeys2(dns_name_t *origin, const char *directory,
 
 		alg = 0;
 		for (i = len + 1 + 1; i < dir.entry.length ; i++) {
-			if (dir.entry.name[i] < '0' || dir.entry.name[i] > '9')
+			const char *digit = strchr(digits, dir.entry.name[i]);
+			if (digit == NULL)
 				break;
 			alg *= 10;
-			alg += strchr(digits, dir.entry.name[i]) - digits;
+			alg += (int)(digit - digits);
 		}
 
 		/*