$NetBSD: patch-config,v 1.1 2020/07/10 11:18:01 nia Exp $

Make sure WARN gets used properly.

--- config.orig	2013-09-24 13:47:05.000000000 +0000
+++ config
@@ -22,7 +22,7 @@ LIBNAME ?= $T.so.$V
 
 # Compilation directives
-WARN ?= -O2 -Wall -fPIC -W -Waggregate-return -Wcast-align -Wmissing-prototypes -Wnested-externs -Wshadow -Wwrite-strings -Wpointer-arith -pedantic
+WARN += -Wall -fPIC -W -Waggregate-return -Wcast-align -Wmissing-prototypes -Wnested-externs -Wshadow -Wwrite-strings -Wpointer-arith -pedantic
 INCS ?= -I$(LUA_INC)
-CFLAGS ?= $(WARN) $(INCS)
+CFLAGS += $(WARN) $(INCS)
 CC ?= gcc