Bug 206815: fixed a benign UMR in the PR_Poll implementations based on

poll().  We should initialize the events field of the pollfd structure
when we set the fd field to -1 even though the events field is ignored
if the fd field is negative.
Modified Files: ptio.c uxpoll.c

nsprpub/pr/src/md/unix/uxpoll.c

@@ -173,6 +173,7 @@ static PRInt32 NativeThreadPoll(
         {
             /* make poll() ignore this entry */
             syspoll[index].fd = -1;
+            syspoll[index].events = 0;
             pds[index].out_flags = 0;
         }
     }

nsprpub/pr/src/pthreads/ptio.c

@@ -3832,6 +3832,7 @@ static PRInt32 _pr_poll_with_poll(
             {
                 /* make poll() ignore this entry */
                 syspoll[index].fd = -1;
+                syspoll[index].events = 0;
                 pds[index].out_flags = 0;
             }
         }