nsswitch: fix a segfault in the krb5 locator plugin

after the number of retries was exceeded, the loop did not
    bail out correctly with an error and went on using a null pointer

diff --git a/nsswitch/winbind_krb5_locator.c b/nsswitch/winbind_krb5_locator.c
index db6e8d0d6cf0593302fe1023ce5976e8e89c9343..e921caea5939af95213435ddc780b0372b2f0fd6 100644 (file)
--- a/nsswitch/winbind_krb5_locator.c
+++ b/nsswitch/winbind_krb5_locator.c
@@ -192,7 +192,7 @@ static krb5_error_code smb_krb5_locator_call_cbfunc(const char *name,
                        break;
                }
 
-               if (ret == EAI_AGAIN) {
+               if ((ret == EAI_AGAIN) && (count > 1)) {
                        count--;
                        continue;
                }