[master] 2b04d2930 Assert

[Dridi Boukelmoune]

commit 2b04d29304f1dd54e599a253b608120fd33f2cfa
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Fri Dec 13 19:00:35 2019 +0100

    Assert

diff --git a/lib/libvcc/vcc_symb.c b/lib/libvcc/vcc_symb.c
index 4bb0a72a7..97d418921 100644
--- a/lib/libvcc/vcc_symb.c
+++ b/lib/libvcc/vcc_symb.c
@@ -358,6 +358,7 @@ VCC_MkSym(struct vcc *tl, const char *b, vcc_kind_t kind, int vlo, int vhi)
 	sym = vcc_sym_in_tab(tl, st, kind, vlo, vhi);
 	AZ(sym);
 	sym = vcc_new_symbol(tl, st, kind, vlo, vhi);
+	AN(sym);
 	sym->noref = 1;
 	return (sym);
 }