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;
diff --git a/decoder/ih264d_process_intra_mb.c b/decoder/ih264d_process_intra_mb.c
index 211d796..2d4d006 100644
--- a/decoder/ih264d_process_intra_mb.c
+++ b/decoder/ih264d_process_intra_mb.c
@@ -1670,7 +1670,7 @@
             {
                 /* Align the size to multiple of 8, so that SIMD functions
                 can read 64 bits at a time. Only 25 bytes are actaully used */
-                UWORD8 au1_ngbr_pels[32];
+                UWORD8 au1_ngbr_pels[32] = {0};
                 WORD32 ngbr_avail;
                 ngbr_avail = u1_is_left_sub_block << 0;
                 ngbr_avail |= u1_is_top_sub_block << 2;