[v9_9] silence warning

diff --git a/lib/isc/regex.c b/lib/isc/regex.c
index 3bb2857ff712f4f99820ffb55e29653ff579ed27..d42a6bf389f04defa3258fb7be5c466cf8dae81e 100644 (file)
--- a/lib/isc/regex.c
+++ b/lib/isc/regex.c
@@ -330,7 +330,8 @@ isc_regex_validate(const char *c) {
                                        {
                                                unsigned int len;
                                                len = strlen(cc[i]);
-                                               if (len != (c - ccname))
+                                               if (len !=
+                                                   (unsigned int)(c - ccname))
                                                        continue;
                                                if (strncmp(cc[i], ccname, len))
                                                        continue;