Removed a memory leak in fs_zip.cpp; trivial formatting in helpdata.cpp

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7191 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/fs_zip.cpp

@@ -85,7 +85,12 @@ wxFSFile* wxZipFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& l
                             GetAnchor(location),
                             wxDateTime(wxFileModificationTime(left)));
     }
-    else return NULL;
+    else
+    {
+        if (s)
+            delete s;
+        return NULL;
+    }
 }