None of the first editions includes a 
raising c
2 to c
2 in the 4th third or a 
restoring c2 on the last quaver in the 2nd triplet. It is most likely another – cf. bar 39 and 41 – oversight of Chopin, although definitely more serious and more difficult to explain. The phrase (bars 43-46) develops the two preceding ones (two-bar ones); there is no reason for the melodic shape of the discussed place, clearly referring to the beginnings of bars 39 and 41, presenting the same idea, to differ from them. This statement is confirmed by analogous phrases in bars 88, 90 and 92. A similar oversight of an alteration of a note and its later cancellation happened to Chopin in the Etude in F minor, op. 25, no. 2, bar 56. In FEH, a before the 4th third was added probably by Chopin himself or under his suggestion. Taking into consideration the above arguments, we introduce this correction to the main text.
Compare the passage in the sources»
category imprint: Differences between sources
issues: Annotations in teaching copies, Annotations in FEH
notation: Pitch