weird exception on windows

[Szabo Bogdan]

Hi,

I noticed that sometimes on windows this line of code crashes the 
test suites.

https://github.com/gedaiu/fluent-asserts/blob/master/core/fluentasserts/core/results.d#L1072

This exception can be captured only with a debugger... is it a 
dmd bug?

```
Thread 25CC created, Entry: mswsock.00007FF9011604C0
EXCEPTION_DEBUG_INFO:
            dwFirstChance: 1
            ExceptionCode: C0000005 (EXCEPTION_ACCESS_VIOLATION)
           ExceptionFlags: 00000000
         ExceptionAddress: 00007FF9055E302C ntdll.00007FF9055E302C
         NumberParameters: 2
ExceptionInformation[00]: 0000000000000000 Read
ExceptionInformation[01]: FFFFFFFFFFFFFFFF Inaccessible Address
First chance exception on 00007FF9055E302C (C0000005, 
EXCEPTION_ACCESS_VIOLATION)!
```

I think this is related with this issue:
https://github.com/gedaiu/fluent-asserts/issues/63

Can anyone help me with this? I don't even know how to start 
fixing this issue...

Thanks,
Bogdan