silence compiler warning

diff --git a/lib/dns/dnssec.c b/lib/dns/dnssec.c
index 088a87a089a799b625191566fde29188ac2d1084..b5ed301b94fd5d4f0f1b380d32ac385428a793db 100644 (file)
--- 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);
                }
 
                /*