Bug with Iceberg

Hi!

I bumped into the following bug, which stems from the following method:
-=-=-=-=-=-=-=-=-=
IceSavedPackageVersion >> isAncestorOf: anotherVersion
        ^ self commit isAncestorOf: anotherVersion commit
-=-=-=-=-=-=-=-=-=

anotherVersion is nil

I attached the log

Cheers,
Alexandre

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Alexandre Bergel  http://www.bergel.eu
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