Fix a compile failure in vp9_get_compressed_data

The lf struct is now with VP9_COMMON, instead of MACROBLOCKD.

Change-Id: Idfdd4f91f78f486078a138322d58bb61e93e1bc9
diff --git a/vp9/encoder/vp9_onyx_if.c b/vp9/encoder/vp9_onyx_if.c
index 26a8fd5..7ba322b 100644
--- a/vp9/encoder/vp9_onyx_if.c
+++ b/vp9/encoder/vp9_onyx_if.c
@@ -3913,7 +3913,7 @@
           double weight = 0;
 #if CONFIG_POSTPROC
           vp9_deblock(cm->frame_to_show, &cm->post_proc_buffer,
-                      cpi->mb.e_mbd.lf.filter_level * 10 / 6);
+                      cm->lf.filter_level * 10 / 6);
 #endif
           vp9_clear_system_state();