Comment 2 for bug 1636673

2016-12-17:15:03:10.526] qtmir.mir: SessionListener::~SessionListener - this= SessionListener(0x7f7d001647c0)
*** Error in `unity8': double free or corruption (out): 0x00007f7ce412e600 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7f7d2aab17e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x7fe0a)[0x7f7d2aab9e0a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7f7d2aabd98c]
/usr/lib/x86_64-linux-gnu/libprotobuf.so.9(_ZN6google8protobuf8internal28DestroyDefaultRepeatedFieldsEv+0x71)[0x7f7cec0a8901]
/usr/lib/x86_64-linux-gnu/libprotobuf-lite.so.9(_ZN6google8protobuf23ShutdownProtobufLibraryEv+0x8b)[0x7f7d20c0172b]
/usr/lib/x86_64-linux-gnu/libmirprotobuf.so.3(+0x210d9)[0x7f7d212530d9]
/lib64/ld-linux-x86-64.so.2(+0x10c17)[0x7f7d2d126c17]
/lib/x86_64-linux-gnu/libc.so.6(+0x39ff8)[0x7f7d2aa73ff8]
/lib/x86_64-linux-gnu/libc.so.6(+0x3a045)[0x7f7d2aa74045]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf7)[0x7f7d2aa5a837]
unity8(_start+0x29)[0x407bd9]