Fix a performance bug that would force the re-creation of the output buffer for each block. Now, the output buffer is reused if big enough.
Fix a performance bug that would force the re-creation of the output buffer for
each block. Now, the output buffer is reused if big enough.

Sputuks3/kanzi,rzel/kanzi,sharkkid/kanzi,rukistar/kanzi,rzel/kanzi,sharkkid/kanzi,sharkkid/kanzi,rukistar/kanzi,rzel/kanzi,rukistar/kanzi,Sputuks3/kanzi,Sputuks3/kanzi