msvc x64 native: fastio/sha1.c and zip/luazip.c warnings

[ylme]

执行 luamake runtime 有 warnings

clibs/fastio/sha1.c(192): warning C4267: '+=': conversion from 'size_t' to 'uint32_t', possible loss of data
clibs/fastio/sha1.c(193): warning C4267: '+=': conversion from 'size_t' to 'uint32_t', possible loss of data

clibs/zip/luazip.c(174): warning C4267: 'function': conversion from 'size_t' to 'uint32_t', possible loss of data
clibs/zip/luazip.c(170): warning C4244: 'initializing': conversion from 'lua_Integer' to 'int', possible loss of data
clibs/zip/luazip.c(184): warning C4244: 'initializing': conversion from 'lua_Integer' to 'int', possible loss of data
clibs/zip/luazip.c(193): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
clibs/zip/luazip.c(214): warning C4244: 'initializing': conversion from 'lua_Integer' to 'int', possible loss of data
clibs/zip/luazip.c(247): warning C4267: 'function': conversion from 'size_t' to 'uint32_t', possible loss of data
clibs/zip/luazip.c(318): warning C4244: 'initializing': conversion from 'lua_Integer' to 'int', possible loss of data
clibs/zip/luazip.c(482): warning C4244: 'initializing': conversion from 'lua_Integer' to 'int', possible loss of data
clibs/zip/luazip.c(790): warning C4267: 'function': conversion from 'size_t' to 'uint32_t', possible loss of data
clibs/zip/luazip.c(916): warning C4267: '=': conversion from 'size_t' to 'long', possible loss of data
clibs/zip/luazip.c(919): warning C4267: '=': conversion from 'size_t' to 'long', possible loss of data