avcodec/vvcdec: do not zero frame qp table

For luma, qp can only change at the CU level, so the qp tab size is related to the CU.
For chroma, considering the joint CbCr, the QP tab size is related to the TU.

libavcodec/vvc/dec.c

@@ -145,6 +145,8 @@ static void min_cb_nz_tl_init(TabList *l, VVCFrameContext *fc)
         TL_ADD(cp_mv[i],     pic_size_in_min_cb * MAX_CONTROL_POINTS);
         TL_ADD(cpm[i],       pic_size_in_min_cb);
     }
+    // For luma, qp can only change at the CU level, so the qp tab size is related to the CU.
+    TL_ADD(qp[LUMA], pic_size_in_min_cb);
 }
 
 static void min_pu_tl_init(TabList *l, VVCFrameContext *fc)
@@ -186,7 +188,6 @@ static void min_tu_tl_init(TabList *l, VVCFrameContext *fc)
 
     for (int i = 0; i < VVC_MAX_SAMPLE_ARRAYS; i++) {
         TL_ADD(tu_coded_flag[i], pic_size_in_min_tu);
-        TL_ADD(qp[i],            pic_size_in_min_tu);
 
         for (int vertical = 0; vertical < 2; vertical++)
             TL_ADD(bs[vertical][i], pic_size_in_min_tu);
@@ -212,6 +213,10 @@ static void min_tu_nz_tl_init(TabList *l, VVCFrameContext *fc)
         TL_ADD(max_len_p[vertical], pic_size_in_min_tu);
         TL_ADD(max_len_q[vertical], pic_size_in_min_tu);
     }
+
+    // For chroma, considering the joint CbCr, the QP tab size is related to the TU.
+    for (int i = CB; i < VVC_MAX_SAMPLE_ARRAYS; i++)
+        TL_ADD(qp[i], pic_size_in_min_tu);
 }
 
 static void pixel_buffer_nz_tl_init(TabList *l, VVCFrameContext *fc)