This was accepted onto master, and we are seeing different a different 32bit build failure:
./brotli/c/dec/decode.c: In function 'PreloadSymbol':
./brotli/c/dec/huffman.h:83:47: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement]
83 | #define BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(H) uint32_t __fastload_##H = (*H)
|                                               ^~~~~~~~
./brotli/c/dec/decode.c:440:3: note: in expansion of macro 'BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD'
440 |   BROTLI_HC_MARK_TABLE_FOR_FAST_LOAD(table);
|   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~