Lack of the 
returning e2 on the 7th semiquaver and the 
returning e2 two semiquavers later clearly suggests the use of the C minor chord in the middle of this bar. Chopin's proofreadings of FE (→GE,EE), however, ensure that, similarly as in bar 4, the composer's intention was the C major chord (in A analogous bar 37 is already written correctly).
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources; Corrections & alterations
issues: Omissions to cancel alteration, Errors of A, Authentic corrections of FE
notation: Pitch