st/nine: Flush the queue at device dtor

Flush the queue to get refcounts right, and properly
release the items, instead of throwing away all pending
commands.

Signed-off-by: Axel Davy <axel.davy@ens.fr>

src/gallium/state_trackers/nine/device9.c

@@ -535,8 +535,13 @@ NineDevice9_dtor( struct NineDevice9 *This )
 
     DBG("This=%p\n", This);
 
-    /* Do not call nine_csmt_process here. The device is dead! */
+    /* Flush all pending commands to get refcount right,
+     * and properly release bound objects. It is ok to still
+     * execute commands while we are in device dtor, because
+     * we haven't released anything yet. Note that no pending
+     * command can increase the device refcount. */
     if (This->csmt_active && This->csmt_ctx) {
+        nine_csmt_process(This);
         nine_csmt_destroy(This, This->csmt_ctx);
         This->csmt_active = FALSE;
         This->csmt_ctx = NULL;