In certain situations, a scan of the table will return the error
code HA_ERR_RECORD_DELETED, and this error code is not 
correctly caught in the Rows_log_event::find_row() function, which
causes an error to be returned for this case.

This patch fixes the problem by adding code to either ignore the
record and continuing with the next one, the the event of a table
scan, or change the error code to HA_ERR_KEY_NOT_FOUND, in the event
that a key lookup is attempted.