Fixed the vmArg: primitive to check the argument index before attempting to access memory, leading to a crash.
Fixed the vmArg: primitive to check the argument index before attempting to access memory, leading to a crash.

krfkeith/slate-language,briantrice/slate-language,briantrice/slate-language,krfkeith/slate-language,briantrice/slate-language,krfkeith/slate-language,krfkeith/slate-language,briantrice/slate-language,krfkeith/slate-language,briantrice/slate-language,briantrice/slate-language,krfkeith/slate-language