Storage.readIndexSpan: handle 0 execution count (likely f6b34d regression)
Storage.readIndexSpan: handle 0 execution count (likely f6b34d regression)

I haven't seen this one fail yet, but it's the same bug -- we used to have
a loop with < maxIteration here that correctly handled 0 exeuctions.

jbosboom/streamjit,jbosboom/streamjit