mruby/mruby — pull request #2455 by cremno (2014-07-09 12:03:02+00:00)
Title: invalid base shouldn't silently fail

Revert 44a5809224e819bf8bcca4ae9a8c5ea5bf4cefd7 and check range of `base` with `mrb_assert`.
It actually can only be either 2, 8, 10 or 16 (and never 0), unless mruby sources are modified. But I don't see a reason to impose further limits.