In the 1st group of demisemiquavers in this bar, one can see in A a crossed-out accidental – most probably a 
– before the 3rd demisemiquaver. Formally, the accidental is not necessary here; it is absent both in FC and FE (→EE1). However, the presence of the f pedal note as well as f2 at the end of the previous bar justify its addition in the form of a cautionary accidental, which was performed in GE and EE2.
See also the next note.
Compare the passage in the sources»
category imprint: Differences between sources; Editorial revisions; Corrections & alterations
issues: EE revisions, GE revisions, Cautionary accidentals, Deletions in A
notation: Pitch