Mail reader sampler: "Aggregate Report" returns random POP statistics

**sergio** ([Bug 56538](https://bz.apache.org/bugzilla//show_bug.cgi?id=56538&redirect=false)):
When reading email with POP3S protocols, the "Aggregate Report" and "Summary Report" return random numbers for those samples.

"View Results Tree" gives reasonable numbers.
Furthermore, if I write results to a .jtl file, and then I reload them to the report, everything is OK.

Looks very much like a bug.

Java: Java(TM) SE Runtime Environment (build 1.7.0_55-b13).

Created attachment [POP_error.jmx](https://apache.github.io/jmeter-bugzilla-attachments/38/56538/31634/POP_error.jmx): JMX file showing the bug

Severity: normal
OS: All