Bug 487537: fixed a possible unintialized variable use in pt_RecvFrom reported by Valgrind.  The patch is contributed by Daniel Franke <df@dfranke.us>.  r=nelson,wtc.
Bug 487537: fixed a possible unintialized variable use in pt_RecvFrom
reported by Valgrind.  The patch is contributed by Daniel Franke
<df@dfranke.us>.  r=nelson,wtc.

makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub