生成CLRBinding时抛出NullReferenceException

[cat12221]

` public struct Fixed64Vector3
{
public Fixed64 x;
public Fixed64 y;
public Fixed64 z;

    public static readonly Fixed64Vector3 Zero3;

    public Fixed64Vector3(int x, int y, int z)
    {
        this.x = new Fixed64(x);
        this.y = new Fixed64(y);
        this.z = new Fixed64(z);
    }

    static Fixed64Vector3()
    {
        Zero3 = new Fixed64Vector3(0, 0, 0);
    }
}


public struct Fixed64
{
    private long m_rawValue;

    public static readonly Fixed64 Zero;

    public Fixed64(long value)
    {
        m_rawValue = value;
    }

    static Fixed64()
    {
        Zero = new Fixed64(0);
    }
}`

---

NullReferenceException: Object reference not set to an instance of an object
ILRuntime.Runtime.Intepreter.ILIntepreter.Execute (ILRuntime.CLR.Method.ILMethod method, ILRuntime.Runtime.Stack.StackObject* esp, System.Boolean& unhandledException) (at Assets/ILRuntime/Runtime/Intepreter/ILIntepreter.cs:2043)
Rethrow as ILRuntimeException: Object reference not set to an instance of an object
IL_0008: stsfld Numerics.FixedTest.Fixed64 Numerics.FixedTest.Fixed64::Zero
Numerics.FixedTest.Fixed64..cctor()

---

Fixed64类型InitializeFields下面这行代码执行中
staticInstance = new ILTypeStaticInstance(this)
由于.cctor中的这行指令
IL_0009: stsfld valuetype Numerics.FixedTest.Fixed64Vector3 Numerics.FixedTest.Fixed64Vector3::Zero
触发了 t.StaticInstance.AssignFromStack，但此时staticInstance为null。

Fixed64放到Fixed64Vector3之前就可避免异常，希望有帮助