other small optimization:
other small optimization:

if (foo) continue;
...body...

==>

if (!foo) { ...body ... }

Only when the parent block is the target loop of the `continue` statement.

beni55/UnuglifyJS,Venima/Test,beni55/UnuglifyJS,Spocdoc/uglify-js-fork,eth-srl/UnuglifyJS,microlv/UglifyJS2,TrigenSoftware/ColaScript,vjeux/UglifyJS2,charleslaw/RapydScript-Decompiler,supriyantomaftuh/UglifyJS2,butchi/decodecodeJS,hxford/UglifyJS2,eth-srl/UnuglifyJS,lautis/UglifyJS2,HankMcCoy/UglifyJS2,shanaithal/UglifyJS2,rvanvelzen/UglifyJS2,SpainTrain/UglifyJS2,hychen/UglifyJS2,VIVEKLUCKY1848/UglifyJS2,avdg/UglifyJS2,kittens/UglifyJS2,Jeremy017/UglifyJS2,kemitchell/UglifyJS2,digitalloggers/UglifyJS2,GerHobbelt/UglifyJS2,tomByrer/UglifyJS2,sahat/UglifyJS2,githuboflee/first,davidbau/UglifyJS2,sielay/UglifyJS2,butchi/codedecodeJS,dabretin/UglifyJS2,TurkeyFried/uglifyjs2-dist,sebmck/UglifyJS2,istr/UglifyJS2,jchbh-duplicate/UglifyJS2,shelsonjava/UglifyJS2