Adding forgetting test zip file and correcting style.

Author: ppisl

graalpython/com.oracle.graal.python.test/src/tests/testzipfile.zip

@@ -64,7 +64,7 @@ public class PZipImporter extends PythonBuiltinObject {
     private static enum EntryType {
         IS_SOURCE,
         IS_PACKAGE
-    };
+    }
 
     private static class SearchOrderEntry {
 
@@ -103,7 +103,7 @@ public static enum ModuleInfo {
         NOT_FOUND,
         MODULE,
         PACKAGE
-    };
+    }
 
     public PZipImporter(LazyPythonClass cls) {
         super(cls);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/zipimporter/PZipImporter.java

@@ -260,7 +260,7 @@ public abstract static class FindModuleNode extends PythonTernaryBuiltinNode {
          * @param fullname
          * @param path This optional argument is ignored. It’s there for compatibility with the
          *            importer protocol.
-         * @return
+         * @return the zipimporter or none, if the module is not found
          */
         @Specialization
         public Object doit(PZipImporter self, String fullname, @SuppressWarnings("unused") Object path) {