Fix whitespace (aaargh)

Author: shana

src/GitHub.VisualStudio/Services/UIProvider.cs

@@ -349,7 +349,7 @@ protected void Dispose(bool disposing)
 
                 StopUI();
                 if (disposables != null)
-				    disposables.Dispose();
+                    disposables.Dispose();
                 disposables = null;
                 if (tempContainer != null)
                     tempContainer.Dispose();