GCC14 no longer treats integer types and pointer types as equivalent in
assignments (including implied assignments of function arguments and return
values), and instead fails the compilation with a type error.
So, as a workaround lets disable the newly introduced error
-Werror=int-conversion and just make it print a warning to enable compiling
with GCC14 as Fedora 40 now defaults to it.
Signed-off-by: Robert Marko <robimarko@gmail.com>