Get rid of -Wgnu-zero-variadic-macro-arguments errors
As zero variadic macro argument, rb_scan_args(argc, argv, "") (or "0"), means 0-arity method and should be defined so, that case doesn't need to consider.
rb_scan_args(argc, argv, "")
"0"
Added by nobu (Nobuyoshi Nakada) about 5 years ago
Get rid of -Wgnu-zero-variadic-macro-arguments errors
As zero variadic macro argument,
rb_scan_args(argc, argv, "")(or
"0"), means 0-arity method and should be defined so, thatcase doesn't need to consider.