refactor: Fix minor compilations warnings

Author: dariusz-f

app/oapv_app_enc.c

@@ -565,7 +565,7 @@ int main(int argc, const char **argv)
     int            frm_cnt[MAX_NUM_FRMS] = { 0 };
     double         bitrate_tot; // total bitrate (byte)
     double         psnr_avg[MAX_NUM_FRMS][MAX_NUM_CC] = { 0 };
-    int            is_inp_y4m, is_rec_y4m;
+    int            is_inp_y4m, is_rec_y4m = 0;
     y4m_params_t   y4m;
     int            is_out = 0, is_rec = 0;
     char          *errstr = NULL;

src/oapv.c

@@ -2068,7 +2068,6 @@ int oapvd_config(oapvd_t did, int cfg, void *buf, int *size)
 int oapvd_info(void *au, int au_size, oapv_au_info_t *aui)
 {
     int ret, frm_count = 0;
-    int pbu_cnt = 0;
     u8 *curpos;
     u32 remain;
 
@@ -2124,7 +2123,6 @@ int oapvd_info(void *au, int au_size, oapv_au_info_t *aui)
 
         curpos += pbu_size;
         remain = (remain < pbu_size)? 0: (remain - pbu_size);
-        ++pbu_cnt;
     }
     DUMP_SET(1);
     return OAPV_OK;

src/oapv_vlc.c

@@ -1210,7 +1210,7 @@ int oapvd_vlc_dc_coeff(oapvd_ctx_t *ctx, oapvd_core_t *core, oapv_bs_t *bs, int
 int oapvd_vlc_ac_coeff(oapvd_ctx_t *ctx, oapvd_core_t *core, oapv_bs_t *bs, s16 *coef, int c)
 {
     int        sign, level, prev_level, run;
-    int        scan_pos_offset, num_coeff, i, coef_cnt = 0;
+    int        scan_pos_offset, num_coeff, i = 0;
     const u16 *scanp;
 
     scanp = oapv_tbl_scan;
@@ -1302,8 +1302,6 @@ int oapvd_vlc_ac_coeff(oapvd_ctx_t *ctx, oapvd_core_t *core, oapv_bs_t *bs, s16
         bs->leftbits -= 1;
         coef[scanp[scan_pos_offset]] = sign ? -(s16)level : (s16)level;
 
-        coef_cnt++;
-
         if(scan_pos_offset >= num_coeff - 1) {
             break;
         }