decrease recommended file size to 32kB to avoid signed overflows

## Compliance

`inflate` is fully compliant with RFC 1951 for data with a decompressed size

of up to 65 kB.

of up to 32 kB.

When compiled with `-DDEFLATE_CHECKSUM`, `inflate_zlib` is fully compliant with

RFC 1950 (decompression only) for data with a decompressed size of up to 65 kB.

RFC 1950 (decompression only) for data with a decompressed size of up to 32 kB.

By default (without `-DDEFLATE_CHECKSUM`), it does not verify the ADLER32

checksum embedded into zlib-compressed data and is therefore not compliant with

RFC 1950.

For files larger than 65 kB, you only need to change some size arguments to

`uint32_t`. However, if you are decompressing files of that size, you probably

have more RAM than this library is designed for. In that case, you may be

better off with [udeflate](https://github.com/jlublin/udeflate),

For files larger than 32 kB, you need to change inflate's return value to

`int32_t` and its size arguments to `uint32_t`. However, if you are

decompressing files of that size, you probably have more RAM than this library

is designed for. In that case, you are probably better off with

[udeflate](https://github.com/jlublin/udeflate),

[uzlib](https://github.com/pfalcon/uzlib), or similar.

## Memory Requirements

./compile.sh

for file in $(find .. -type f -size -65000c); do

for file in $(find .. -type f -size -32760c); do

	if ! ./deflate $file | ./inflate > tmp; then

		echo "inflate error at $file"

		./deflate $file | ./inflate > tmp