Merge remote-tracking branch 'origin/maint-0.2.3' into maint-0.2.4

Conflicts:
	src/or/circuituse.c

changes/bug11519

@@ -0,0 +1,3 @@
+  o Minor bugfixes:
+    - Avoid sending an garbage value to the controller when a circuit is
+      cannibalized. Fixes bug 11519; bugfix on 0.2.3.11-alpha.

src/or/circuituse.c

@@ -1518,7 +1518,7 @@ circuit_launch_by_extend_info(uint8_t purpose,
     circ = circuit_find_to_cannibalize(purpose, extend_info, flags);
     if (circ) {
       uint8_t old_purpose = circ->base_.purpose;
-      struct timeval old_timestamp_began;
+      struct timeval old_timestamp_began = circ->base_.timestamp_began;
 
       log_info(LD_CIRC,"Cannibalizing circ '%s' for purpose %d (%s)",
                build_state_get_exit_nickname(circ->build_state), purpose,