hwclock: avoid dereferencing a pointer [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>
(cherry picked from commit 16c1d8734847bdeac0e6650a7364e33fb881bfc6)

diff --git a/sys-utils/hwclock-rtc.c b/sys-utils/hwclock-rtc.c
index e1ee6a05d13d78cfcd34c56a771f77e12d064378..f7d766f2c6536c7f4253eba783ac1337a85c4ffe 100644 (file)
--- a/sys-utils/hwclock-rtc.c
+++ b/sys-utils/hwclock-rtc.c
@@ -431,6 +431,9 @@ static int resolve_rtc_param_alias(const char *alias, __u64 *value)
 {
        const struct hwclock_param *param = &hwclock_params[0];
 
+       if (!alias)
+               return 1;
+
        while (param->name) {
                if (!strcmp(alias, param->name)) {
                        *value = param->id;