Doesn't build with ruby 3.2.4

[loserMcloser]

On archlinux

compiling src/line_editor.c
In file included from /usr/include/ruby-3.2.0/ruby/ruby.h:27,
                 from /usr/include/ruby-3.2.0/ruby.h:38,
                 from src/line_editor.c:30:
src/line_editor.c: In function ‘Init_line_editor_native’:
/usr/include/ruby-3.2.0/ruby/internal/anyargs.h:308:143: error: passing argument 3 of ‘rb_define_singleton_method_00’ from incompatible pointer type [-Wincompatible-pointer-types]
  308 | #define rb_define_singleton_method(obj, mid, func, arity)   RBIMPL_ANYARGS_DISPATCH_rb_define_singleton_method((arity), (func))((obj), (mid), (func), (arity))
      |                                                                                                                                               ^~~~~~
      |                                                                                                                                               |
      |                                                                                                                                               VALUE (*)(VALUE,  VALUE) {aka long unsigned int (*)(long unsigned int,  long unsigned int)}
src/line_editor.c:1622:5: note: in expansion of macro ‘rb_define_singleton_method’
 1622 |     rb_define_singleton_method(mLineEditor, "completer_word_break_characters",
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/ruby-3.2.0/ruby/internal/anyargs.h:271:21: note: expected ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} but argument is of type ‘VALUE (*)(VALUE,  VALUE)’ {aka ‘long unsigned int (*)(long unsigned int,  long unsigned int)’}
  271 | RBIMPL_ANYARGS_DECL(rb_define_singleton_method, VALUE, const char *)
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/ruby-3.2.0/ruby/internal/anyargs.h:255:41: note: in definition of macro ‘RBIMPL_ANYARGS_DECL’
  255 | RBIMPL_ANYARGS_ATTRSET(sym) static void sym ## _00(__VA_ARGS__, VALUE(*)(VALUE), int); \
      |                                         ^~~
/usr/include/ruby-3.2.0/ruby/internal/anyargs.h:308:143: error: passing argument 3 of ‘rb_define_singleton_method_00’ from incompatible pointer type [-Wincompatible-pointer-types]
  308 | #define rb_define_singleton_method(obj, mid, func, arity)   RBIMPL_ANYARGS_DISPATCH_rb_define_singleton_method((arity), (func))((obj), (mid), (func), (arity))
      |                                                                                                                                               ^~~~~~
      |                                                                                                                                               |
      |                                                                                                                                               VALUE (*)(VALUE,  VALUE) {aka long unsigned int (*)(long unsigned int,  long unsigned int)}
src/line_editor.c:1626:5: note: in expansion of macro ‘rb_define_singleton_method’
 1626 |     rb_define_singleton_method(mLineEditor, "completer_quote_characters",
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/ruby-3.2.0/ruby/internal/anyargs.h:271:21: note: expected ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} but argument is of type ‘VALUE (*)(VALUE,  VALUE)’ {aka ‘long unsigned int (*)(long unsigned int,  long unsigned int)’}
  271 | RBIMPL_ANYARGS_DECL(rb_define_singleton_method, VALUE, const char *)
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/ruby-3.2.0/ruby/internal/anyargs.h:255:41: note: in definition of macro ‘RBIMPL_ANYARGS_DECL’
  255 | RBIMPL_ANYARGS_ATTRSET(sym) static void sym ## _00(__VA_ARGS__, VALUE(*)(VALUE), int); \
      |                                         ^~~
make[1]: *** [Makefile:248: line_editor.o] Error 1

[loserMcloser]

Please accept #389 to fix.