Ruby

• variable.c (trace_ev): Removed "not reached" comment as this line is
  reached.
• variable.c (rb_obj_remove_instance_variable): Replaced "not reached"
  comment with the UNREACHABLE macro.
• variable.c (rb_mod_const_missing): ditto.
• variable.c (rb_mod_remove_cvar): ditto.
• enum.c (first_i): ditto.
• string.c (rb_str_aref): ditto.
• string.c (str_byte_aref): ditto.
• string.c (rb_to_id): ditto.
• io.c (rb_io_fmode_modestr): ditto.
• io.c (rb_io_oflags_modestr): ditto.
• pack.c (num2i32): ditto.
• vm_eval.c (rb_method_missing): ditto.
• vm_eval.c (rb_f_throw): ditto.
• dir.c (dir_read): ditto.
• win32/win32.c (child_result): ditto.
• struct.c (rb_struct_getmember): ditto.
• struct.c (rb_struct_set): ditto.
• struct.c (rb_struct_aref_id): ditto.
• eval.c (rb_f_raise): ditto.
• process.c (rb_f_exit_bang): ditto.
• process.c (rb_f_exit): ditto.
• process.c (rb_f_abort): ditto.
• ext/-test-/iter/break.c (iter_break_value): ditto.
• ext/pty/pty.c (pty_check): ditto.
• ext/openssl/ossl_pkey.c (ossl_pkey_new): ditto.
• ext/readline/readline.c (rb_remove_history): ditto.
• ext/stringio/stringio.c (strio_unimpl): ditto.
• numeric.c (num_sadded): ditto.
• numeric.c (num_init_copy): ditto.
• numeric.c (rb_num2ll): ditto.
• numeric.c (rb_num2ull): ditto.
• vm_insnhelper.c (call_cfunc): ditto.
• ruby.c (opt_W_getter): ditto.
• bignum.c (rb_big_coerce): ditto.
• file.c (rb_f_test): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35322 b2dd03c8-39d4-4d8f-98ff-823fe69b080e