Fixing nullObj being passed in entityKilled

[Cyruz143]

Not sure when this started happening but I noticed that vehicles were being deleted nearly instantly when they exploded. Looking at the array, it was filled with <NULL-object>.

Not sure if this is off the back of an ACE update or something but entityKilled is returning a lot of garbage now. Example:

 0:08:01 "O Charlie 3-4:3 REMOTE"
 0:08:01 "<NULL-object>"
 0:08:28 "O Charlie 2-4:1 REMOTE"
 0:08:28 "<NULL-object>"
 0:08:31 "O Charlie 1-1:2 REMOTE"
 0:08:31 "<NULL-object>"

or

 0:09:00 "2a6af13d600# 587069: zastavka_jih.p3d"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:00 "<NULL-object>"
 0:09:01 "<NULL-object>"
 0:09:01 "<NULL-object>"
 0:09:01 "<NULL-object>"

Only sensible thing we can do is exit out when anything nuill is passed to the garbage cleaner, will need to keep an eye on the number mid-mission and make sure everything still cleans up properly!

[Cyruz143]

I've changed the filtering logic here too, there were probably a few edge cases that were slipping by so I've changed it to explicitly only loook for the things we want to clean up. @kami- check please.

[Cyruz143]

acemod/ACE3#7561

[kami-]

You have to replace the ORs with ANDs. Also the line is too long and should be split into multiple lines like this:

if (condition1
    && {condition2}
    && {condition3}) {