Fix coveirty overflowed issues

Author: Chen, Bohan

encode/av1encode.c

@@ -78,6 +78,7 @@ put_ui(bitstream* bs, uint32_t val, int size_in_bits)
 {
     CHECK_BS_NULL(bs);
     CHECK_CONDITION((size_in_bits + bs->bit_offset) <= (8 * bs->max_size_in_byte));
+    CHECK_CONDITION(size_in_bits > 0 && size_in_bits <= 32);
     int remain_bits = 8 - (bs->bit_offset % 8);
 
     // make sure val does not overflow size_in_bits
@@ -2536,6 +2537,7 @@ static int save_codeddata(unsigned long long display_order, unsigned long long e
     if(encode_order == 0)
     {
         //first frame
+        CHECK_CONDITION(coded_size >= 44);
         unsigned int ivf_size = coded_size - 32 - 12;
         ret = fseek(coded_fp, frame_start + 32, SEEK_SET);
         CHECK_CONDITION(ret == 0);
@@ -2547,6 +2549,7 @@ static int save_codeddata(unsigned long long display_order, unsigned long long e
     else
     {
         //other frames
+        CHECK_CONDITION(coded_size >= 12);
         unsigned int ivf_size = coded_size - 12;
         ret = fseek(coded_fp, frame_start, SEEK_SET);
         CHECK_CONDITION(ret == 0);