SDL: Error missing 'flags' initialization (see bug #2881)

From 1f3df900f919e7177e480e63c07447db232564a1 Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Wed, 28 Apr 2021 23:40:26 +0200
Subject: [PATCH] Error missing 'flags' initialization (see bug #2881)

---
 src/video/SDL_RLEaccel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/video/SDL_RLEaccel.c b/src/video/SDL_RLEaccel.c
index 3f3b62cec..1d94443fc 100644
--- a/src/video/SDL_RLEaccel.c
+++ b/src/video/SDL_RLEaccel.c
@@ -1423,6 +1423,7 @@ SDL_RLESurface(SDL_Surface * surface)
         return -1;
     }
 
+    flags = surface->map->info.flags;
     if (flags & SDL_COPY_COLORKEY) {
         /* ok */
     } else if ((flags & SDL_COPY_BLEND) && surface->format->Amask) {