Advance pos to skip the next end of line

Property definitions

gamnit :: model_parser_base $ StringProcessor :: skip_eol
	# Advance `pos` to skip the next end of line
	protected fun skip_eol
	do
		while not eof do
			var c = src.chars[pos]
			pos += 1
			if c == '\n' then break
		end
	end
lib/gamnit/model_parsers/model_parser_base.nit:172,2--180,4