Make exceptions use of LEB decoder valgrind clean.
Make exceptions use of LEB decoder valgrind clean.

Bug: 11670287
Change-Id: I0c11c710d03e08559e0032bf602cf7cf13c92da9

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