SDL_image: Fix loading of 4-bit .ico files (6caf4)

SDL Commits
#1 
From 6caf47dd373a09cadf6b5f77cea4f30ce43bd3b5 Mon Sep 17 00:00:00 2001
From: Tad Hardesty <[EMAIL REDACTED]>
Date: Sun, 29 Jan 2023 15:04:23 -0800
Subject: [PATCH] Fix loading of 4-bit .ico files

(cherry picked from commit b740b68946de9f3952617d252192fac90c6edb9e)
---
 IMG_bmp.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/IMG_bmp.c b/IMG_bmp.c
index 44b9e82d..a2c38b3c 100644
--- a/IMG_bmp.c
+++ b/IMG_bmp.c
@@ -249,7 +249,6 @@ LoadICOCUR_RW(SDL_RWops * src, int type, int freesrc)
         case 1:
         case 4:
             ExpandBMP = biBitCount;
-            biBitCount = 8;
             break;
         case 8:
             ExpandBMP = 8;