fix corner case in `AST_For.init` (#1652)
authorAlex Lam S.L <alexlamsl@gmail.com>
Fri, 24 Mar 2017 11:31:17 +0000 (19:31 +0800)
committerGitHub <noreply@github.com>
Fri, 24 Mar 2017 11:31:17 +0000 (19:31 +0800)
commitac51d4c5a079dccbc9a6cf69d06f757432c69694
tree5f121ca645f1704ae3c3190249c04479cbd6e0a5
parent0432a7abb98f3aec871daa88331aa9223979dde3
fix corner case in `AST_For.init` (#1652)

Enforce `null` as value for empty initialisation blocks.

fixes #1648
lib/compress.js
lib/output.js
test/compress/loops.js