Make sure to initialize fd_sets in aio.c

This was spotted by valgrind.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5470 c046a42c-6fe2-441c-8c8c-71466251a162

aio.c

@@ -126,6 +126,9 @@ void qemu_aio_wait(void)
 
         walking_handlers = 1;
 
+        FD_ZERO(&rdfds);
+        FD_ZERO(&wrfds);
+
         /* fill fd sets */
         LIST_FOREACH(node, &aio_handlers, node) {
             /* If there aren't pending AIO operations, don't invoke callbacks.