Add bit accounting information for deringing

It seems that when bit accounting was introduced in
https://chromium-review.googlesource.com/#/c/400658/
there was one place which was accidentally skipped, leading to build failures
with --enable-dering. This patch adds the missing information.

Change-Id: I59e1bd6f7e1d4fa58506ee7af307b845c78a7cbe
diff --git a/av1/decoder/decodeframe.c b/av1/decoder/decodeframe.c
index e12b9da..1ef97a5 100644
--- a/av1/decoder/decodeframe.c
+++ b/av1/decoder/decodeframe.c
@@ -1858,7 +1858,7 @@
   if (bsize == BLOCK_64X64) {
     if (cm->dering_level != 0 && !sb_all_skip(cm, mi_row, mi_col)) {
       cm->mi_grid_visible[mi_row * cm->mi_stride + mi_col]->mbmi.dering_gain =
-          aom_read_literal(r, DERING_REFINEMENT_BITS);
+          aom_read_literal(r, DERING_REFINEMENT_BITS, ACCT_STR);
     } else {
       cm->mi_grid_visible[mi_row * cm->mi_stride + mi_col]->mbmi.dering_gain =
           0;