remove knowledge of defaultallocator_free_displaysurface from sdl.c

Let register_displayallocator hand over the old width/height to the new
allocator.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index bfbd0afc73..599a0803d7 100644
--- a/vl.c
+++ b/vl.c
@@ -2615,7 +2615,13 @@ DisplayState *get_displaystate(void)
 
 DisplayAllocator *register_displayallocator(DisplayState *ds, DisplayAllocator *da)
 {
-    if(ds->allocator ==  &default_allocator) ds->allocator = da;
+    if(ds->allocator ==  &default_allocator) {
+        DisplaySurface *surf;
+        surf = da->create_displaysurface(ds_get_width(ds), ds_get_height(ds));
+        defaultallocator_free_displaysurface(ds->surface);
+        ds->surface = surf;
+        ds->allocator = da;
+    }
     return ds->allocator;
 }