sdl12-compat: Fix missing format string argument in low-bit-depth workaround

SDL Commits
1 
From 219c3585f456cbd9eb9245835923861fcddb6eaf Mon Sep 17 00:00:00 2001
From: Simon McVittie <[EMAIL REDACTED]>
Date: Mon, 24 Oct 2022 14:51:10 +0100
Subject: [PATCH] Fix missing format string argument in low-bit-depth
 workaround

Signed-off-by: Simon McVittie <smcv@collabora.com>
---
 src/SDL12_compat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
index 612d190fa..eae326ca6 100644
--- a/src/SDL12_compat.c
+++ b/src/SDL12_compat.c
@@ -4994,7 +4994,7 @@ SDL_CreateRGBSurface(Uint32 flags12, int width, int height, int depth, Uint32 Rm
        !!! FIXME:  least one game function correctly. */
     if (depth < 8) {
         if (WantDebugLogging) {
-            SDL20_Log("This app is creating an %d-bit SDL_Surface, but we are bumping it to 8-bits. If you see rendering issues, please report them!");
+            SDL20_Log("This app is creating an %d-bit SDL_Surface, but we are bumping it to 8-bits. If you see rendering issues, please report them!", depth);
         }
         depth = 8;
     }