Glibc deliberately passes random value for the sixth parameter when calling
FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME. This is a regular case of using the
Futex API, so V should not complain that "Syscall param futex(val3) contains
uninitialised byte(s)", if the futex does not have a specified value initially.
For more info, see function pthread_initialize_minimal_internal at:
glibc/nptl/nptl-init.c.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12773