check for NULL return from shadow_pw()
probably unreachable on this platform; pointed out by
coolbugcheckers AT gmail.com
diff --git a/openbsd-compat/port-uw.c b/openbsd-compat/port-uw.c
index 9edb1b4..1322131 100644
--- a/openbsd-compat/port-uw.c
+++ b/openbsd-compat/port-uw.c
@@ -60,6 +60,9 @@
/* Just use the supplied fake password if authctxt is invalid */
char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd;
+ if (pw_password == NULL)
+ return 0;
+
/* Check for users with no password. */
if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0)
return (1);