SDL_ttf: update for warning flags in watcom makefile.

From b4cca871a9951ca845246c260e85e21640524eeb Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 29 Dec 2021 23:55:24 +0300
Subject: [PATCH] update for warning flags in watcom makefile.

---
 Makefile.os2 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Makefile.os2 b/Makefile.os2
index 7a1bb59..2cfe086 100644
--- a/Makefile.os2
+++ b/Makefile.os2
@@ -36,6 +36,8 @@ CFLAGS+= -bd
 CFLAGS+= -DBUILD_SDL
 # ignore many 'W201: Unreachable code' warnings:
 CFLAGS+= -wcd=201
+# newer OpenWatcom versions enable W303 by default
+CFLAGS+= -wcd=303
 
 all: $(LIBFILE) showfont.exe