ctf: Fix CtfTmfTrace.readEnd() to use createTimestamp()

ctf: Fix CtfTmfTrace.readEnd() to use createTimestamp()

The method should use createTimestamp(long) to create the timestamp, so
that any timestamp transformation configured for the trace is applied.

Change-Id: I55fc504dd3139600f3b211a359bfffbec34dc927
Signed-off-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-on: https://git.eclipse.org/r/97147
Reviewed-by: Hudson CI
Reviewed-by: Loic Prieur-Drevon <loic.prieurdrevon@gmail.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>