MID1202 Failed Parsing due Incorrect Length Size

[OscardLucas]

Description

Due package size is taken by package.Length and not by Header.Length an exception Argument of out range is thrown.
Header Size ignores the NUL value.

Solution in Mid1202 Parse method

replace: variableDataField.Size = package.Length - variableDataField.Index;
with: variableDataField.Size = Header.Length - variableDataField.Index;

Expected behavior

MID1202 Parsed properly

Additional Information

Bug solved on issue #59

Thanks for the library it has helped me a lot.