Fix nuget.

.appveyor.yml

@@ -4,6 +4,10 @@ platform:
 image:
   - Visual Studio 2017
   - Ubuntu
+before_build:
+  - cmd: cd profiler\build\win32
+  - cmd: nuget restore
+  - cmd: cd ..\..\..
 build_script:
   - cmd: msbuild .\update\build\win32\update.vcxproj
   - cmd: msbuild .\profiler\build\win32\Tracy.vcxproj