Make sure to add a new line at the end of XML files
diff --git a/csharp/Google.Protobuf.Tools.nuspec b/csharp/Google.Protobuf.Tools.nuspec
index 2ed8c88..411ee28 100644
--- a/csharp/Google.Protobuf.Tools.nuspec
+++ b/csharp/Google.Protobuf.Tools.nuspec
@@ -36,4 +36,4 @@
     <file src="Google.Protobuf.Tools.targets" target="buildCrossTargeting"/>
     <file src="Google.Protobuf.Tools.targets" target="build"/>
   </files>
-</package>
\ No newline at end of file
+</package>