Ruby

Fix compiler issues in test on C99

Fixes the following issue when compiling using C99:

ext/-test-/rb_call_super_kw/rb_call_super_kw.c
ext/-test-/random/loop.c:16:39: error: extra ';' outside of a function [-Werror,-Wextra-semi]
RB_RANDOM_DEFINE_INIT_INT32_FUNC(loop);