Fix type mismatch in deflate_compress.c

[MesuDevastator]

In short

The type mismatch between u32 and unsigned int in
deflate_compress.c caused a weird compilation failure on arm-none-eabi-gcc 14.2.0 when compiling for ARM32.

Details

lib/deflate_compress.c: In function 'deflate_compress_lazy_generic':
lib/deflate_compress.c:2666:49: error: passing argument 9 of 'hc_matchfinder_longest_match' from incompatible pointer type [-Wincompatible-pointer-types]
  2666 |                                                 &cur_offset);
       |                                                 ^~~~~~~~~~~
       |                                                 |
       |                                                 unsigned int *
In file included from lib/deflate_compress.c:166:
hc_matchfinder.h:191:42: note: expected 'u32 * const' {aka 'long unsigned int * const'} but argument is of type 'unsigned int *'
   191 |                              u32 * const offset_ret)
       |                              ~~~~~~~~~~~~^~~~~~~~~~

The type u32 is somehow recognized as long unsigned int whose pointer is incompatible with unsigned int. Simply changing the types of the 4 variables to u32 addresses the issue (hopefully this won't break anything).

[ebiggers]

Fixed by ae726d8.