Fixes Enum.HasFlag throwing ArgumentException

[SandorDobos]

Description

Motivation and Context

• Fixes Enum.HasFlag throws ArgumentException Home#730

How Has This Been Tested?

Using test below.

[Flags]
public enum PinEventTypes
{
    None = 0,
    Rising = 1,
    Falling = 2
}

[TestMethod]
public void MyTestMethod()
{
    PinEventTypes e = PinEventTypes.Falling;
    Assert.False(e.HasFlag(PinEventTypes.Rising));
    Assert.True(e.HasFlag(PinEventTypes.Falling));
}

Screenshots

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Config and build (change in the configuration and build system, has no impact on code or features)
• Dependencies (update dependencies and changes associated, has no impact on code or features)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[josesimoes]

Nice catch!

[SandorDobos]

I confirm that this fix solves nanoframework/Home#725 too.