From 23f0b5f5b1b8aa72639dc42aaef11d626d555690 Mon Sep 17 00:00:00 2001
From: Cosimo Lupo <cosimo@anthrotype.com>
Date: Sat, 19 Jan 2019 12:11:14 +0000
Subject: [PATCH] [feaLib.builder] do not make <NULL> ValueRecord

---
 Lib/fontTools/feaLib/builder.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/fontTools/feaLib/builder.py b/Lib/fontTools/feaLib/builder.py
index 957b01d64..e521a0edc 100644
--- a/Lib/fontTools/feaLib/builder.py
+++ b/Lib/fontTools/feaLib/builder.py
@@ -1114,7 +1114,7 @@ _VALUEREC_ATTRS = {
 
 def makeOpenTypeValueRecord(v, pairPosContext):
     """ast.ValueRecord --> (otBase.ValueRecord, int ValueFormat)"""
-    if v is None:
+    if not v:
         return None, 0
 
     vr = {}