[tcq] bug fix for DQ off

bug fix for DQ off

av1/encoder/encodetxb.c

diff --git a/av1/encoder/encodetxb.c b/av1/encoder/encodetxb.c
index de33302..e7c4e91 100644
--- a/av1/encoder/encodetxb.c
+++ b/av1/encoder/encodetxb.c
@@ -1056,7 +1056,7 @@
   int max = lf ? COEFF_BASE_RANGE + LF_NUM_BASE_LEVELS
                : COEFF_BASE_RANGE + NUM_BASE_LEVELS;
   max -= enable_tcq ? 1 : 0;
-  int hr = level - max;
+  int hr = level - max - 1;
   if (enable_tcq && level > max) {
     hr = get_high_range(level, lf);
   }