Decoder: Initialize some array and structure to zero

In intra_pred_ref_filtering function, initialize the values
of array au1_ngbr_pels to zero and in ih264d_parse_decode_slice
function, initialize the values of struct s_tmp_poc to zero.

Bug: 111762686
Test: vendor
Change-Id: Iac67f5e7d24f821627de64c8570f4be648c296c8
diff --git a/decoder/ih264d_parse_slice.c b/decoder/ih264d_parse_slice.c
index 3608c6c..3605b97 100644
--- a/decoder/ih264d_parse_slice.c
+++ b/decoder/ih264d_parse_slice.c
@@ -1000,7 +1000,7 @@
     dec_pic_params_t *ps_pps;
     dec_seq_params_t *ps_seq;
     dec_slice_params_t *ps_cur_slice = ps_dec->ps_cur_slice;
-    pocstruct_t s_tmp_poc;
+    pocstruct_t s_tmp_poc = {0};
     WORD32 i_delta_poc[2];
     WORD32 i4_poc = 0;
     UWORD16 u2_first_mb_in_slice, u2_frame_num;