Fixup 41caf2d

Lexical binding...

Fixes https://github.com/behdad/fonttools/issues/40

Lib/fontTools/ttLib/tables/otBase.py

@@ -608,12 +608,14 @@ class BaseTable(object):
 				name = conv.name
 				writer.writeCountReference(table, name)
 				counts.append(name)
+				def storeValueFactory(table, name):
 					def storeValue(value):
 						if table[name] is None:
 							table[name] = value
 						else:
 							assert table[name] == value, (table[name], value)
-				countVars[name] = storeValue
+					return storeValue
+				countVars[name] = storeValueFactory(table, name)
 			else:
 				conv.write(writer, font, countVars, value)