qxl: fix pre-save logic

Oops.  Logic is backwards.

Fixes: 39b8a18 ("qxl: remove assert in qxl_pre_save.")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/610
Resolves: https://bugzilla.redhat.com//show_bug.cgi?id=2002907
Signed-off-by: Gerd Hoffmann <[email protected]>
Reviewed-by: Daniel P. Berrangé <[email protected]>
Reviewed-by: Marc-André Lureau <[email protected]>
Message-Id: <[email protected]>

Author: kraxel

hw/display/qxl.c

@@ -2252,7 +2252,7 @@ static int qxl_pre_save(void *opaque)
     } else {
         d->last_release_offset = (uint8_t *)d->last_release - ram_start;
     }
-    if (d->last_release_offset < d->vga.vram_size) {
+    if (d->last_release_offset >= d->vga.vram_size) {
         return 1;
     }