(hopefully) fix appcenter builds

Author: Trolldemorted

Signal-Windows.Lib/SignalLibHandle.cs

@@ -102,7 +102,6 @@ internal class SignalLibHandle : ISignalLibHandle
         private ISignalFrontend MainWindow;
         private Task IncomingMessagesTask;
         private Task OutgoingMessagesTask;
-        internal OutgoingMessages OutgoingMessages;
         private SignalServiceMessageReceiver MessageReceiver;
         public BlockingCollection<ISendable> OutgoingQueue = new BlockingCollection<ISendable>(new ConcurrentQueue<ISendable>());
         private EventWaitHandle GlobalResetEvent;

Signal-Windows/Signal-Windows.csproj

@@ -2,6 +2,7 @@
 <Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
+    <AppxSymbolPackageEnabled>true</AppxSymbolPackageEnabled>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
     <ProjectGuid>{41736A64-5B66-44AF-879A-501192A46920}</ProjectGuid>