(kdc_destroy): free context when done, pointed out by Rafal Malinowski.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21036 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/gssapi/ntlm/digest.c

@@ -171,6 +171,8 @@ kdc_destroy(OM_uint32 *minor, void *ctx)
 	krb5_cc_close(c->context, c->id);
     if (c->context)
 	krb5_free_context(c->context);
+    memset(c, 0, sizeof(*c));
+    free(c);
 
     return GSS_S_COMPLETE;
 }