Update exception message in string_for_symbol
This is a static function only called in two places (rb_to_id and rb_to_symbol), and in both places, both symbols and strings are allowed. This makes the error message consistent with rb_check_id and rb_check_symbol.
Fixes [Bug #20607]
Added by jeremyevans (Jeremy Evans)
Update exception message in string_for_symbol
This is a static function only called in two places (rb_to_id and
rb_to_symbol), and in both places, both symbols and strings are
allowed. This makes the error message consistent with rb_check_id
and rb_check_symbol.
Fixes [Bug #20607]