avcodec/hevcdec: remove unused variables from hls_slice_data

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

libavcodec/hevcdec.c

@@ -2497,7 +2497,7 @@ static void hls_decode_neighbour(HEVCLocalContext *lc, int x_ctb, int y_ctb,
     lc->ctb_up_left_flag = ((x_ctb > 0) && (y_ctb > 0)  && (ctb_addr_in_slice-1 >= s->ps.sps->ctb_width) && (s->ps.pps->tile_id[ctb_addr_ts] == s->ps.pps->tile_id[s->ps.pps->ctb_addr_rs_to_ts[ctb_addr_rs-1 - s->ps.sps->ctb_width]]));
 }
 
-static int hls_decode_entry(AVCodecContext *avctxt, void *isFilterThread)
+static int hls_decode_entry(AVCodecContext *avctxt, void *arg)
 {
     HEVCContext *s  = avctxt->priv_data;
     HEVCLocalContext *const lc = s->HEVClc;
@@ -2561,14 +2561,10 @@ static int hls_decode_entry(AVCodecContext *avctxt, void *isFilterThread)
 
 static int hls_slice_data(HEVCContext *s)
 {
-    int arg[2];
-    int ret[2];
+    int ret = 0;
 
-    arg[0] = 0;
-    arg[1] = 1;
-
-    s->avctx->execute(s->avctx, hls_decode_entry, arg, ret , 1, sizeof(int));
-    return ret[0];
+    s->avctx->execute(s->avctx, hls_decode_entry, NULL, &ret , 1, 0);
+    return ret;
 }
 static int hls_decode_entry_wpp(AVCodecContext *avctxt, void *hevc_lclist,
                                 int job, int self_id)