SDL: fixed const error when compiling for mutated total_need value in SDL_rwops.c

SDL Commits
1 
From e35730ac546b9934aab41a7cddbcd4cceb77705d Mon Sep 17 00:00:00 2001
From: Brian Kirkpatrick <[EMAIL REDACTED]>
Date: Wed, 14 Dec 2022 19:23:18 -0800
Subject: [PATCH] fixed const error when compiling for mutated total_need value
 in SDL_rwops.c

---
 src/file/SDL_rwops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/file/SDL_rwops.c b/src/file/SDL_rwops.c
index 4d72c31314a5..207e30cd34b5 100644
--- a/src/file/SDL_rwops.c
+++ b/src/file/SDL_rwops.c
@@ -185,7 +185,7 @@ static Sint64 SDLCALL windows_file_seek(SDL_RWops *context, Sint64 offset, int w
 static Sint64 SDLCALL
 windows_file_read(SDL_RWops *context, void *ptr, Sint64 size)
 {
-    const size_t total_need = (size_t) size;
+    size_t total_need = (size_t) size;
     size_t total_read = 0;
     size_t read_ahead;
     DWORD byte_read;