In this context, the missing 
mark is undoubtedly a result of Chopin's inattention, who added pedalling in a proofreading of FE, or – which is more plausible – of the engraver implementing this proofreading. The mark was added both in GE and EE.
Compare the passage in the sources »
category imprint: Differences between sources; Editorial revisions
issues: EE revisions, Inaccuracies in FE, GE revisions, No pedal release mark
notation: Pedalling