Backport src: fix handle leaks #7711#9014

Merged

MylesBorins merged 4 commits intonodejs:v4.x-stagingfrom

MylesBorins:backport-7711

Oct 11, 2016

Commits on Oct 11, 2016

src: fix handle leak in Buffer::New()

bnoordhuis
authored and
Myles Borins
committed
src: fix handle leak in BuildStatsObject()

bnoordhuis
authored and
Myles Borins
committed
src: fix handle leak in UDPWrap::Instantiate()

bnoordhuis
authored and
Myles Borins
committed
src: remove unnecessary HandleScopes

bnoordhuis
authored and
Myles Borins
committed