Build fail on Fedora 44

[YaoFei509]

LTFS can be compiled normally on Ubuntu 26.04, whether GCC or Clang. However, it can't be compiled on Fedora 44. Using GCC will report a bunch of -Wp errors, and using clang will report a bunch of codes that do not meet the C99 specification. Previously, it was able to work successfully with clang on Fedora 43

[YaoFei509]

Success.

./configure CC=clang --prefix=/opt/ltfs

Remove -Werror=declaration-after-statement in some Makefile in src folder.