pam_loginuid: cleanup loginuid buffer initialization

* modules/pam_loginuid/pam_loginuid.c (set_loginuid): Move loginuid
buffer initialization closer to its first use.

diff --git a/modules/pam_loginuid/pam_loginuid.c b/modules/pam_loginuid/pam_loginuid.c
index d25842289687feba56f15b87c814125664a89707..c476f7b6b89a4db2cfbea5252133854c31c59808 100644 (file)
--- a/modules/pam_loginuid/pam_loginuid.c
+++ b/modules/pam_loginuid/pam_loginuid.c
@@ -69,7 +69,6 @@ static int set_loginuid(pam_handle_t *pamh, uid_t uid)
                close(fd);
        }
 
-       count = snprintf(loginuid, sizeof(loginuid), "%lu", (unsigned long)uid);
        fd = open("/proc/self/loginuid", O_NOFOLLOW|O_RDWR);
        if (fd < 0) {
                if (errno == ENOENT) {
@@ -82,6 +81,7 @@ static int set_loginuid(pam_handle_t *pamh, uid_t uid)
                return rc;
        }
 
+       count = snprintf(loginuid, sizeof(loginuid), "%lu", (unsigned long)uid);
        if (pam_modutil_read(fd, buf, sizeof(buf)) == count &&
            memcmp(buf, loginuid, count) == 0) {
                rc = PAM_SUCCESS;