Fix problem where engine.now() could return false
Fix problem where engine.now() could return false

This happened if an app asked for the time before the breathe loop has
run. This could happen when an app accesses engine.now during
initialization. This indeed does happen if the initial app network
uses a stateful PcapFilter.

dpino/snabb,lukego/snabbswitch,aperezdc/snabbswitch,justincormack/snabbswitch,virtualopensystems/snabbswitch,lukego/snabbswitch,pavel-odintsov/snabbswitch,lukego/snabbswitch,Igalia/snabb,kellabyte/snabbswitch,kellabyte/snabbswitch,Igalia/snabb,kellabyte/snabbswitch,eugeneia/snabb,heryii/snabb,plajjan/snabbswitch,pirate/snabbswitch,wingo/snabbswitch,wingo/snabb,alexandergall/snabbswitch,alexandergall/snabbswitch,pirate/snabbswitch,wingo/snabb,mixflowtech/logsensor,Igalia/snabb,heryii/snabb,snabbco/snabb,eugeneia/snabb,kbara/snabb,dpino/snabb,eugeneia/snabb,alexandergall/snabbswitch,andywingo/snabbswitch,aperezdc/snabbswitch,mixflowtech/logsensor,wingo/snabb,mixflowtech/logsensor,eugeneia/snabbswitch,snabbco/snabb,Igalia/snabb,snabbnfv-goodies/snabbswitch,lukego/snabb,snabbco/snabb,dpino/snabbswitch,fhanik/snabbswitch,heryii/snabb,eugeneia/snabb,dpino/snabb,plajjan/snabbswitch,Igalia/snabb,justincormack/snabbswitch,xdel/snabbswitch,Igalia/snabb,kbara/snabb,mixflowtech/logsensor,javierguerragiraldez/snabbswitch,dpino/snabb,snabbco/snabb,xdel/snabbswitch,lukego/snabb,Igalia/snabbswitch,dpino/snabbswitch,dpino/snabb,javierguerragiraldez/snabbswitch,eugeneia/snabb,hb9cwp/snabbswitch,pavel-odintsov/snabbswitch,wingo/snabb,kbara/snabb,eugeneia/snabb,wingo/snabbswitch,lukego/snabbswitch,heryii/snabb,alexandergall/snabbswitch,Igalia/snabb,dwdm/snabbswitch,fhanik/snabbswitch,hb9cwp/snabbswitch,alexandergall/snabbswitch,dpino/snabb,lukego/snabb,eugeneia/snabbswitch,kbara/snabb,eugeneia/snabb,alexandergall/snabbswitch,dwdm/snabbswitch,justincormack/snabbswitch,SnabbCo/snabbswitch,virtualopensystems/snabbswitch,snabbnfv-goodies/snabbswitch,alexandergall/snabbswitch,dpino/snabbswitch,justincormack/snabbswitch,aperezdc/snabbswitch,snabbnfv-goodies/snabbswitch,eugeneia/snabbswitch,hb9cwp/snabbswitch,snabbco/snabb,pirate/snabbswitch,heryii/snabb,xdel/snabbswitch,kbara/snabb,lukego/snabb,wingo/snabb,fhanik/snabbswitch,Igalia/snabbswitch,dpino/snabbswitch,plajjan/snabbswitch,andywingo/snabbswitch,dpino/snabb,snabbnfv-goodies/snabbswitch,virtualopensystems/snabbswitch,SnabbCo/snabbswitch,andywingo/snabbswitch,pavel-odintsov/snabbswitch,wingo/snabb,alexandergall/snabbswitch,hb9cwp/snabbswitch,javierguerragiraldez/snabbswitch,wingo/snabbswitch,kbara/snabb,snabbco/snabb,Igalia/snabbswitch,eugeneia/snabbswitch,aperezdc/snabbswitch,Igalia/snabbswitch,dwdm/snabbswitch,SnabbCo/snabbswitch,eugeneia/snabb,mixflowtech/logsensor,andywingo/snabbswitch,heryii/snabb,SnabbCo/snabbswitch,Igalia/snabbswitch,snabbco/snabb,wingo/snabbswitch,snabbco/snabb,Igalia/snabb,plajjan/snabbswitch