Don't pass NULL to the %s format.

Reviewed by:	kris

diff --git a/libutil/pw_util.c b/libutil/pw_util.c
index fe99d7171b346371370781e1ecaa0e77a957fbaf..c6c70ffb3e992818d9944ec2d6ea0ed7eecd87c1 100644 (file)
--- a/libutil/pw_util.c
+++ b/libutil/pw_util.c
@@ -249,8 +249,12 @@ pw_error(name, err, eval)
 #ifdef YP
        extern int _use_yp;
 #endif /* YP */
-       if (err)
-               warn("%s", name);
+       if (err) {
+               if (name != NULL)
+                       warn("%s", name);
+               else
+                       warn(NULL);
+       }
 #ifdef YP
        if (_use_yp)
                warnx("NIS information unchanged");