Unit tests on Windows trigger debug popup

{markdown}
When running the view-engine unit tests on Windows, a debug pop is opening once the test is finished (even on success).

To reproduce just run `ctest` from within `build\couchdb`.

Here are the error messages:

```
erl.exe has stopped working

A problem caused the program to stop working correctly.
Windows will close the program an notify you if a solution is
available.

Debug Close program
```

From the Event viewer:

```
Faulting application name: erl.exe, version: 0.0.0.0, time stamp: 0x52e15856
Faulting module name: ntdll.dll, version: 6.3.9600.16384, time stamp: 0x5215f938
Exception code: 0xc000000d
Fault offset: 0x00000000000ff04c
Faulting process id: 0xde8
Faulting application start time: 0x01d19ebeb721aa21
Faulting application path: C:\volker\cb\install\bin\erl.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: f5d6db61-0ab1-11e6-80b8-ceacbcc91ea1
Faulting package full name:
Faulting package-relative application ID:
```{markdown}