None of the sources includes a 
restoring e
2 at the end of the bar. It must be Chopin's oversight – it is the most frequent mistake committed by Chopin. In this case, the likelihood of an error was additionally increased by the change of pitch of the note – initially, Chopin wrote here a2 in A – performed almost certainly due to the combination with the next bar.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Omissions to cancel alteration, Errors resulting from corrections, Errors repeated in GE, Errors repeated in FE, Errors repeated in EE
notation: Pitch