epriestley 31ee49b14d Fix Javascript busy loop when trying to delete tokens from an empty tokenizer ... Summary: Fixes T13147. In D19437, I changed this logic to support deleting the `""` (empty string) token, but `[].pop()` returns `undefined`, not `null`, if the list is empty and I didn't think to try deleting an empty input. Fix the logic so we don't end up in a loop if the input is empty. Test Plan: - In any browser, deleted all tokens in a tokenizer; then pressed delete again. - Before: tab hangs in an infinte loop. - After: smooth sailing. Reviewers: amckinley, avivey Reviewed By: avivey Maniphest Tasks: T13147 Differential Revision: https://secure.phabricator.com/D19456		2018-06-01 14:51:06 -07:00
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javelin	Fix Javascript busy loop when trying to delete tokens from an empty tokenizer	2018-06-01 14:51:06 -07:00