[v9_11] silence "unused value" warning

(cherry picked from commit f4d20b15a2ae52aac9ea8316e546abb61e22ae39)

diff --git a/lib/isc/unix/dir.c b/lib/isc/unix/dir.c
index 29a587ac2c0aa136faf1bd5327adb1ac78adc8fc..d43e5ced01438b67535c0241fd8591c828646100 100644 (file)
--- a/lib/isc/unix/dir.c
+++ b/lib/isc/unix/dir.c
@@ -160,6 +160,9 @@ isc_dir_chdir(const char *dirname) {
 
 isc_result_t
 isc_dir_chroot(const char *dirname) {
+#ifdef HAVE_CHROOT
+       void *tmp;
+#endif
 
        REQUIRE(dirname != NULL);
 
@@ -170,7 +173,9 @@ isc_dir_chroot(const char *dirname) {
         * may fail to load library in chroot.
         * Do not report errors if it fails, we do not need any result now.
         */
-       getprotobyname("udp") && getservbyname("domain", "udp");
+       tmp = getprotobyname("udp");
+       if (tmp != NULL)
+               (void) getservbyname("domain", "udp");
 
        if (chroot(dirname) < 0 || chdir("/") < 0)
                return (isc__errno2result(errno));