ZipPackage internal constructor checks hasContentTypeXml twice

[Reiqy]

EPPlus usage

Personal use

Environment

Windows

Epplus version

8.1.0

Spreadsheet application

No response

Description

Hi,

This is probably not even a bug, but while diagnosing some unrelated issue I noticed that the code in ZipPackage.cs checks !hasContentTypeXml twice in a row.

See:

EPPlus/src/EPPlus/Packaging/ZipPackage.cs

Lines 130 to 137 in 1d54345

	if (!hasContentTypeXml)
	{
	throw (new InvalidDataException("The file is not a valid Package file. If the file is encrypted, please supply the password in the constructor."));
	}
	if (!hasContentTypeXml)
	{
	throw (new InvalidDataException("The file is not a valid Package file. If the file is encrypted, please supply the password in the constructor."));
	}

[JanKallman]

Thanks for pointing this out. This is likely an old merge issue, from the early day. I'll merge your PR.