Handle inflate on buffer larger than chunk size

[jbghoul]

Issue

• In Zlib function zlibBufferSync :
  ** it tries to handle a given buffer
  ** the default chunkSize is 16384
  ** it calls zlib method _processChunk

• in Zlib method _processChunk
  ** there is a do-while loop calling binding.writeSync method to process the given buffer (parameter named chunk)
  ** the chunkSize options is used as available out memory
  ** the do-while loop calls a function callback that is supposed to handle the case where the available out memory is not enough
  ** the do-while loop breaks if there is an error in the writeSync process

• in Zlib method writeSync
  ** in calls inflate method and check returned status
  ** if the status is not OK, it marks an error, making the do-while loop breaks

• in inflate method:
  ** in case MATCH: if there is no memory left, it breaks the for-loop
  ** ret is Z_OK
  ** condition flush === Z_FINISH and ret === Z_OK is turning ret to Z_BUF_ERROR

As a consequence :

• status to Z_BUF_ERROR marks an error
• the do-while loop breaks
• the do-while loop does not handle the case where given buffer size is larger than chunk size option

Proposal

From: https://github.com/browserify/browserify-zlib/blob/master/src/binding.js#L241

• Check status after inflate
• if it is an Z_BUF_ERROR and no memory available, do not consider it has an error
• if so, the do-while loop in _processChunk can continue to handle large buffer