Incorrect IDE004 "Cast is redundant" hint

**Version Used**: 
Microsoft Visual Studio 2015 14.0.25123.0 Update 2
.NET Framework 4.6.01038

**Steps to Reproduce**:
Write code:

``` c#
static class Program
{
  static readonly long x = -(long)int.MinValue;
}
```

**Expected Behavior**:
No compiler hints

**Actual Behavior**:
IDE0004 Cast is redundant

If the cast is removed:
CS0220 The operation overflows at compile time in checked mode
