pam: document that we don't do error checking when parsing vtnr

diff --git a/src/login/pam-module.c b/src/login/pam-module.c
index d7f412860a10b9615cc4a3ca850ceea3f9d1f453..0d387918c7eac328a63fa6d932ca6c82728f399f 100644 (file)
--- a/src/login/pam-module.c
+++ b/src/login/pam-module.c
@@ -452,6 +452,7 @@ _public_ PAM_EXTERN int pam_sm_open_session(
                 tty = "";
         }
 
+        /* If this fails vtnr will be 0, that's intended */
         if (!isempty(cvtnr))
                 safe_atou32(cvtnr, &vtnr);