In Chopin's notation, the 
marks which are not followed by 
usually appear at the end of the pieces. In other situations it is mostly a result of an oversight, yet sometimes it seems that Chopin wanted to emphasise a performance of a given fragment with pedal but without a precise indication of each movement of the leg. This is the situation we are probably facing in this place, as the marks of a pedal depressed on each quaver could simply occupy too much space. In order to avoid any ambiguity, in the main text we add con. In the editions the pedal mark was omitted. Cf. bars 11-12.
Compare the passage in the sources»
category imprint: Differences between sources; Editorial revisions
issues: Inaccuracies in FE, No pedal release mark
notation: Pedalling