The extension of the c quaver introduced by GE (→FE,EE,IE) seems logical if we take into account the notation of similar figures in bars 159-165, in particular these strictly analogous at the beginning of bar 163 and 165. Therefore, one could assume Chopin's oversight if it were not for the visible traces of removal of an element of notation in A, corresponding to the additional c minim. Therefore, in the main text we keep the A notation, probably intended by Chopin.
Compare the passage in the sources»
category imprint: Differences between sources; Corrections & alterations; Source & stylistic information
issues: Corrections in A, GE revisions
notation: Rhythm