Fix seldom another sessionbreak memory leak

[alorbach]

Another memoryleak appears to be happening but more seldom, see buildbot run: https://build.rsyslog.com/#/builders/79/builds/323

==5081== ==5081== HEAP SUMMARY: ==5081== in use at exit: 32 bytes in 1 blocks ==5081== total heap usage: 92,822 allocs, 92,821 frees, 3,744,757 bytes allocated ==5081== ==5081== 32 bytes in 1 blocks are definitely lost in loss record 1 of 1 ==5081== at 0x4C2B9B5: calloc (vg_replace_malloc.c:711) ==5081== by 0x4E3A41D: addToEpollSet (relp.c:101) ==5081== by 0x4E3AA14: addSessToEpoll (relp.c:147) ==5081== by 0x4E3AA14: relpEngineAddToSess (relp.c:211) ==5081== by 0x4E3AA14: handleConnectionRequest (relp.c:670) ==5081== by 0x4E3AA14: engineEventLoopRun (relp.c:844) ==5081== by 0x4E3B08E: relpEngineRun (relp.c:1024) ==5081== by 0x401C97: main (receive.c:475) ==5081== { <insert_a_suppression_name_here> Memcheck:Leak match-leak-kinds: definite fun:calloc fun:addToEpollSet fun:addSessToEpoll fun:relpEngineAddToSess fun:handleConnectionRequest fun:engineEventLoopRun fun:relpEngineRun fun:main }

[rgerhards]

@alorbach - is this solved with the recent session cleanup fix?

[alorbach]

this happens rarely, and is not yet fixed.