Ticket 440: pj_timer_entry_init() doesn't initialize timer ID

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1672 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/src/pj/timer.c b/pjlib/src/pj/timer.c
index 1e28b92..9ab3ab5 100644
--- a/pjlib/src/pj/timer.c
+++ b/pjlib/src/pj/timer.c
@@ -444,6 +444,7 @@
 {
     pj_assert(entry && cb);
 
+    entry->_timer_id = -1;
     entry->id = id;
     entry->user_data = user_data;
     entry->cb = cb;