Process terminated through Debugger inspecting property under Linux

Issue Type: Bug

The included Program has a class property who's getter accesses a postgres database.
Steps:
- put a breakpoint on the *Console.WriteLine...* line
- run debugger
- if stopped, hover the mouse over the *demo* symbol
- the debugger will try to display the value of *demo.ClientId* and thereby terminate the debugged process.
Error Message: *The target process exited with code 0 while evaluating the function 'crash_demo.Program.CrashDemo.ClientId.get'.The program '[893707] crash-demo.dll' has exited with code 0 (0x0).*
- might have to do with the native call that occurs while evaluation the prop

```
using System.Data;
using System;
using Npgsql;

namespace crash_demo
{
class Program
{
static void Main(string[] args)
{
CrashDemo demo = new CrashDemo();
Console.WriteLine("ClientIs is " + demo.ClientId);
}

public class CrashDemo
{
public string ClientId
{
get
{
string clientId = string.Empty;
using (IDbConnection connection = GetConnection())
{
IDbCommand dbCommand = connection.CreateCommand();
dbCommand.CommandType = CommandType.Text;

dbCommand.CommandText = @"select client_id from clients where kdnr = '123456'";
IDataReader reader = dbCommand.ExecuteReader();

if (reader.Read())
{
clientId = (string)reader["client_id"];
}
reader.Dispose();
return clientId;
}
}
}
IDbConnection GetConnection()
{
IDbConnection connection = new NpgsqlConnection();
connection.ConnectionString = "Host=127.0.0.1;Username=stocks;Database=stocks";
connection.Open();
return connection;
}
}
}
}
```
VS Code version: Code 1.43.2 (0ba0ca52957102ca3527cf479571617f0de6ed50, 2020-03-24T07:52:11.516Z)
OS version: Linux x64 5.5.10-200.fc31.x86_64

System Info

|Item|Value|
|---|---|
|CPUs|Intel Core Processor (Skylake, IBRS) (3 x 2207)|
|GPU Status|2d_canvas: unavailable_software
flash_3d: unavailable_off
flash_stage3d: unavailable_off
flash_stage3d_baseline: unavailable_off
gpu_compositing: unavailable_off
multiple_raster_threads: disabled_off
oop_rasterization: unavailable_off
protected_video_decode: unavailable_off
rasterization: unavailable_off
skia_renderer: disabled_off_ok
video_decode: unavailable_off
viz_display_compositor: enabled_on
viz_hit_test_surface_layer: disabled_off_ok
webgl: enabled_readback
webgl2: unavailable_off|
|Load (avg)|1, 1, 1|
|Memory (System)|7.77GB (3.30GB free)|
|Process Argv|--no-sandbox|
|Screen Reader|no|
|VM|0%|
Extensions (8)

Extension|Author (truncated)|Version
---|---|---
vscode-css-formatter|aes|1.0.1
vs-code-xml-format|fab|0.1.5
vscode-firefox-debug|fir|2.7.1
auto-using|Fud|0.7.15
csharp|ms-|1.21.16
mono-debug|ms-|0.15.8
debugger-for-chrome|msj|4.12.6
vscode-gitignore-generator|pio|1.0.1