https://bugs.winehq.org/show_bug.cgi?id=36615
--- Comment #1 from Austin English austinenglish@gmail.com --- There's also: ==16363== 152 bytes in 1 blocks are definitely lost in loss record 5,149 of 6,194 ==16363== at 0x4008DDA: calloc (vg_replace_malloc.c:619) ==16363== by 0x4E852BE3: _dl_allocate_tls (in /usr/lib/ld-2.18.so) ==16363== by 0x4EA7C7B9: pthread_create@@GLIBC_2.1 (in /usr/lib/libpthread-2.18.so) ==16363== by 0x7BC8EA23: RtlCreateUserThread (thread.c:544) ==16363== by 0x7B87CFF0: CreateRemoteThread (thread.c:88) ==16363== by 0x7B87CF4D: CreateThread (thread.c:54) ==16363== by 0x727E156: _beginthreadex (thread.c:129) ==16363== by 0x80C7BBA2: ??? (in /home/austin/.wine-valgrind/drive_c/windows/system32/gecko/2.24/wine_gecko/nspr4.dll) ==16363== by 0x80C796AD: ??? (in /home/austin/.wine-valgrind/drive_c/windows/system32/gecko/2.24/wine_gecko/nspr4.dll) ==16363==
but that's more likely gecko