doneAddrs: reset addrs to NULL after freeing list

Resolves warning from Oracle Parfait static analyzer:

Warning: Dangling pointer
   Dangling pointer [dangling-pointer]:
      Invalid pointer is accessible to caller via global addrs
        at line 664 of xdm/auth.c in function 'doneAddrs'.
        Invalid pointer accessible via global addrs at line 646
          a accessed from addrs at line 658 in function 'doneAddrs'
          a freed with free at line 662

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/xdm/auth.c b/xdm/auth.c
index e24a5b9..07dd836 100644
--- a/xdm/auth.c
+++ b/xdm/auth.c
@@ -661,6 +661,7 @@ doneAddrs (void)
 		free (a->number);
 		free (a);
 	}
+	addrs = NULL;
 }
 
 static int checkEntry (Xauth *auth);