Export `rb_deprecate_constant`

internal/variable.h

@@ -34,7 +34,6 @@ VALUE rb_attr_delete(VALUE, ID);
 VALUE rb_ivar_lookup(VALUE obj, ID id, VALUE undef);
 void rb_autoload_str(VALUE mod, ID id, VALUE file);
 VALUE rb_autoload_at_p(VALUE, ID, int);
-void rb_deprecate_constant(VALUE mod, const char *name);
 NORETURN(VALUE rb_mod_const_missing(VALUE,VALUE));
 rb_gvar_getter_t *rb_gvar_getter_function_of(const struct rb_global_entry *);
 rb_gvar_setter_t *rb_gvar_setter_function_of(const struct rb_global_entry *);
@@ -51,6 +50,7 @@ void rb_mv_generic_ivar(VALUE src, VALUE dst);
 VALUE rb_const_missing(VALUE klass, VALUE name);
 int rb_class_ivar_set(VALUE klass, ID vid, VALUE value);
 void rb_iv_tbl_copy(VALUE dst, VALUE src);
+void rb_deprecate_constant(VALUE mod, const char *name);
 RUBY_SYMBOL_EXPORT_END
 
 MJIT_SYMBOL_EXPORT_BEGIN