malloc/free are being used if SWIFTSHADER_TRANSLATOR_DISABLE_POOL_ALLOC
is defined.

Change-Id: I213c9d614b38fecdc673be5058d5f6f2bc579ca6
Reviewed-on: https://swiftshader-review.googlesource.com/19968Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>