StyleCop clean ZipFile

OpenRA.FileFormats/Filesystem/ZipFile.cs

@@ -91,20 +91,16 @@ namespace OpenRA.FileFormats
 
 		public void Write(Dictionary<string, byte[]> contents)
 		{
-			pkg.Close();
-
-			pkg = SZipFile.Create(filename);
-
-			pkg.BeginUpdate();
 			// TODO: Clear existing content?
+			pkg.Close();
+			pkg = SZipFile.Create(filename);
+			pkg.BeginUpdate();
 
 			foreach (var kvp in contents)
 				pkg.Add(new StaticMemoryDataSource(kvp.Value), kvp.Key);
 
 			pkg.CommitUpdate();
-
 			pkg.Close();
-
 			pkg = new SZipFile(new MemoryStream(File.ReadAllBytes(filename)));
 		}
 	}