Reorganized imports following #337

src/main/java/org/kohsuke/github/HttpException.java

@@ -1,11 +1,10 @@
 package org.kohsuke.github;
 
+import javax.annotation.CheckForNull;
 import java.io.IOException;
 import java.net.HttpURLConnection;
 import java.net.URL;
 
-import javax.annotation.CheckForNull;
-
 /**
  * {@link IOException} for http exceptions because {@link HttpURLConnection} throws un-discerned
  * {@link IOException} and it can help to know the http response code to decide how to handle an