Galera uses uninitialized memory

mtr --valgrind wsrep_info.plugin

==6651== Thread 8:
==6651== Invalid read of size 4
==6651== at 0xE69820: Wsrep_thd_args::thread_type() (wsrep_mysqld.h:426)
==6651== by 0xE68AA0: start_wsrep_THD(void*) (wsrep_mysqld.cc:2709)
==6651== by 0xE41174: pfs_spawn_thread (pfs.cc:1862)
==6651== by 0x4E42568: start_thread (in /lib64/libpthread-2.26.so)
==6651== by 0x6ECBA2E: clone (in /lib64/libc-2.26.so)
==6651== Address 0xe5baae0 is 16 bytes inside a block of size 24 free'd
==6651== at 0x4C2F938: operator delete(void*) (vg_replace_malloc.c:586)
==6651== by 0xE68A1F: start_wsrep_THD(void*) (wsrep_mysqld.cc:2703)
==6651== by 0xE41174: pfs_spawn_thread (pfs.cc:1862)
==6651== by 0x4E42568: start_thread (in /lib64/libpthread-2.26.so)
==6651== by 0x6ECBA2E: clone (in /lib64/libc-2.26.so)
==6651== Block was alloc'd at
==6651== at 0x4C2E91A: operator new(unsigned long) (vg_replace_malloc.c:344)
==6651== by 0xE782AF: wsrep_create_appliers(long) (wsrep_thd.cc:142)
==6651== by 0xE613BE: wsrep_init_startup(bool) (wsrep_mysqld.cc:829)
==6651== by 0x75F2E8: init_server_components() (mysqld.cc:4975)
==6651== by 0x760713: mysqld_main(int, char**) (mysqld.cc:5567)
==6651== by 0x755216: main (main.cc:25)
==6842== Thread 8:
==6842== Invalid read of size 4
==6842== at 0xE69820: Wsrep_thd_args::thread_type() (wsrep_mysqld.h:426)
==6842== by 0xE68AA0: start_wsrep_THD(void*) (wsrep_mysqld.cc:2709)
==6842== by 0xE41174: pfs_spawn_thread (pfs.cc:1862)
==6842== by 0x4E42568: start_thread (in /lib64/libpthread-2.26.so)
==6842== by 0x6ECBA2E: clone (in /lib64/libc-2.26.so)
==6842== Address 0xea9e820 is 16 bytes inside a block of size 24 free'd
==6842== at 0x4C2F938: operator delete(void*) (vg_replace_malloc.c:586)
==6842== by 0xE68A1F: start_wsrep_THD(void*) (wsrep_mysqld.cc:2703)
==6842== by 0xE41174: pfs_spawn_thread (pfs.cc:1862)
==6842== by 0x4E42568: start_thread (in /lib64/libpthread-2.26.so)
==6842== by 0x6ECBA2E: clone (in /lib64/libc-2.26.so)
==6842== Block was alloc'd at
==6842== at 0x4C2E91A: operator new(unsigned long) (vg_replace_malloc.c:344)
==6842== by 0xE782AF: wsrep_create_appliers(long) (wsrep_thd.cc:142)
==6842== by 0xE613BE: wsrep_init_startup(bool) (wsrep_mysqld.cc:829)
==6842== by 0x75F2E8: init_server_components() (mysqld.cc:4975)
==6842== by 0x760713: mysqld_main(int, char**) (mysqld.cc:5567)
==6842== by 0x755216: main (main.cc:25)