Attempt to fix incorrect colours on some BGR displays


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2974 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/sdl.c b/sdl.c
index dc11937..326935a 100644
--- a/sdl.c
+++ b/sdl.c
@@ -87,7 +87,7 @@
     ds->data = screen->pixels;
     ds->linesize = screen->pitch;
     ds->depth = screen->format->BitsPerPixel;
-    if (ds->depth == 32 && screen->format->Rshift == 0) {
+    if (screen->format->Bshift > screen->format->Rshift) {
         ds->bgr = 1;
     } else {
         ds->bgr = 0;