SDL_ttf: SDF: 'spread' default value is 8. Added to increase left/right, top/bottom glyph size.

From ea1a8a5c648a504f372ef73dca503742a1241631 Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Fri, 2 Jul 2021 23:20:03 +0200
Subject: [PATCH] SDF: 'spread' default value is 8. Added to increase
 left/right, top/bottom glyph size.

---
 SDL_ttf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/SDL_ttf.c b/SDL_ttf.c
index 346cbba..7d6dc0c 100644
--- a/SDL_ttf.c
+++ b/SDL_ttf.c
@@ -1979,8 +1979,8 @@ static FT_Error Load_Glyph(TTF_Font *font, c_glyph *cached, int want, int transl
         /* Adjust for SDF */
         if (font->render_sdf) {
             /* Default 'spread' property */
-            cached->sz_width += 16;
-            cached->sz_rows  += 16;
+            cached->sz_width += 2 * 8;
+            cached->sz_rows  += 2 * 8;
         }