fix corner case in `collapse_vars` (#3699)
authorAlex Lam S.L <alexlamsl@gmail.com>
Wed, 29 Jan 2020 16:08:53 +0000 (00:08 +0800)
committerGitHub <noreply@github.com>
Wed, 29 Jan 2020 16:08:53 +0000 (00:08 +0800)
commita3754068dde7a51ab41b59a6d8a17a3a8c022564
treebbf713958d95e4e5d558f7173959f0dfce7fb48f
parent2ba5f391e008b5d842571094d1140f9ae888ea4d
fix corner case in `collapse_vars` (#3699)

fixes #3698
lib/compress.js
test/compress/collapse_vars.js