[master] ae742a4e1 turn long OBE special case into assertion

[Nils Goroll]

commit ae742a4e16cc45585f13410389c5ce4ac4eec9ec
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Dec 16 12:48:40 2019 +0100

    turn long OBE special case into assertion

diff --git a/lib/libvcc/vcc_xref.c b/lib/libvcc/vcc_xref.c
index 415e9ce95..342fdb967 100644
--- a/lib/libvcc/vcc_xref.c
+++ b/lib/libvcc/vcc_xref.c
@@ -106,8 +106,7 @@ vcc_AddUses(struct vcc *tl, const struct token *t1, const struct token *t2,
 {
 	struct procuse *pu;
 
-	if (tl->curproc == NULL)	/* backend */
-		return;
+	AN(tl->curproc);
 	pu = TlAlloc(tl, sizeof *pu);
 	assert(pu != NULL);
 	pu->t1 = t1;