[Bug] InstallUtil DLL launcher issue in dev branch

**Feature Request or Bug**
Bug

**Describe the feature request or bug**
In the dev branch, when I use the OutputKind setting DynamicallyLinkedLibrary I get the error:
`System.NullReferenceException: Object reference not set to an instance of an object.`
Other OutputKind options seem to work fine.

**To Reproduce**
Steps to reproduce the behavior:
1. Generate standard listener (in my test non-SSL)
2. Create Launcher with GruntHTTP implant, DotNetVersion 3.5 or 4, and choose OutputKind version of DynamicallyLinkedLibrary
3. Disable Defender real-time protection on grunt host
4. Download and run launcher with
`C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe /logfile= /U filename.dll`
5. See error

**Expected behavior**
Grunt connected to covenant server

**Screenshots**

**Covenant Server Information:**
- Docker

**Target Information (System that implant is running on):**
- OS: Windows 10
- Version: 19042.1165

**Additional context**
Looking at wireshark it doesn't seem to be attempting the connection, it's erroring out prior.