[master] 4dac230 Don't explode if ErrWhere2() comes with a NULL-pointer, fall back to ErrWhere()

[Poul-Henning Kamp]

commit 4dac2303f87627ae5c37cb85723acef3998c5543
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Mar 14 08:56:59 2011 +0000

    Don't explode if ErrWhere2() comes with a NULL-pointer, fall back to
    ErrWhere()

diff --git a/lib/libvcl/vcc_token.c b/lib/libvcl/vcc_token.c
index 28f5cdc..6818777 100644
--- a/lib/libvcl/vcc_token.c
+++ b/lib/libvcl/vcc_token.c
@@ -197,6 +197,10 @@ vcc_ErrWhere2(struct vcc *tl, const struct token *t, const struct token *t2)
 {
 	const char  *l1, *l2, *l3;
 
+	if (t == NULL) {
+		vcc_ErrWhere(tl, t2);
+		return;
+	}
 	vcc_iline(t, &l1, 0);
 	t2 = VTAILQ_PREV(t2, tokenhead, list);
 	vcc_iline(t2, &l2, 1);