If NetworkStorageSession doesn't have a SoupNetworkSession yet, we are creating it only to set the languages. Since we already set the global value, the languages will be set when the SoupNetworkSession is created later. This is not a big deal for the language property, but it will be for proxies after bug #128674.
Created attachment 298950 [details] Patch
Committed r210786: <http://trac.webkit.org/changeset/210786>
It's way too much typing to get the SoupNetworkSession in the normal case where you don't care if you create it or not. :(