MIPS fix.
MIPS fix.

Don't use a local std::string for a mutex name.

Change-Id: I29b6f19f4dc50931deb820b7975ae98e72fdeaf4

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst