Snippets for ffmpeg 8.1.2 from Alpine riscv64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-riscv64/community/ffmpeg/ffmpeg-8.1.2-r0.log.

• libavcodec/bsf/extract_extradata.c:374:55: warning: passing argument 2 of 'bytestream2_init_writer' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    374 |             bytestream2_init_writer(&pb_extradata, nal->data, 0);
        |                                                    ~~~^~~~~~
  

• libavcodec/wmadec.c:524:30: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
    524 |         s->channel_coded[ch] = a;
        |                              ^
  

• /usr/include/fortify/string.h:70:16: warning: '__orig_memmove' writing 48 bytes into a region of size 8 overflows the destination [-Wstringop-overflow=]
     70 |         return __orig_memmove(__d, __s, __n);
        |                ^
  

• /usr/include/fortify/string.h:70:16: warning: '__orig_memmove' specified size between 18446744065119617024 and 18446744073709551608 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
     70 |         return __orig_memmove(__d, __s, __n);
        |                ^
  

• /usr/include/fortify/string.h:70:16: warning: '__orig_memmove' specified size between 18446744065119617024 and 18446744073709551608 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
     70 |         return __orig_memmove(__d, __s, __n);
        |                ^
  

• /usr/include/fortify/string.h:81:16: warning: '__builtin_memset' specified bound between 18446744069414584316 and 18446744073709551608 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
     81 |         return __builtin_memset(__d, __c, __n);
        |                ^