try PKGTYPE win.binary to fix AppVeyor error

ThierryO · ThierryO · commit dc22e46f6100 · 2019-06-13T21:08:29.000+02:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -33,6 +33,7 @@ on_failure:
 environment:
   GITHUB_PAT:
     secure: VXO22OHLkl4YhVIomSMwCZyOTx03Xf2WICaVng9xH7gISlAg8a+qrt1DtFtk8sK5
+  PKGTYPE: 'win.binary'
 
 artifacts:
   - path: '*.Rcheck\**\*.log'
