Only check errno if getpwuid() fails

Checking errno otherwise is unspecified.

1 files changed, 6 insertions, 4 deletions

diff --git a/slock.c b/slock.c
index aedee2e..399386b 100644
--- a/slock.c
+++ b/slock.c
@@ -67,10 +67,12 @@ getpw(void) { /* only run as root */
 
         errno = 0;
         pw = getpwuid(getuid());
-        if (errno)
-                die("slock: getpwuid: %s\n", strerror(errno));
-        else if (!pw)
-                die("slock: cannot retrieve password entry (make sure to suid or sgid slock)\n");
+        if (!pw) {
+                if (errno)
+                        die("slock: getpwuid: %s\n", strerror(errno));
+                else
+                        die("slock: cannot retrieve password entry (make sure to suid or sgid slock)\n");
+        }
         endpwent();
         rval =  pw->pw_passwd;