Matteo Merli de4b7145a9 MemoryRegionCache$Entry objects are not recycled
Motivation:

Even though MemoryRegionCache$Entry instances are allocated through a recycler they are not properly recycled,
leaving a lot of instances to be GCed along with Recycler$DefaultHandle objects.
Fixes #4071

Modification:

Recycle Entry when done using it.

Result:

Less GCed objects.
2015-08-10 21:29:39 +02:00
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