Emilio e56de1025a fix(core): ensure initial value of QueryList length (#21980) (#21982)
Set initial value of `length` to `0`.

Fixes regression introduced by e544742156 (diff-a85dbe0991a7577ea24b49374e9ae90b) where the `length` property ceased to have initial value.

Closes #21980

PR Close #21982
2018-02-07 12:08:44 -08:00
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