Valgrind: Don't use QString::fromLocal8Bit() on remote output.

Instead, assume UTF-8, which is very likely to be correct for a remote
Linux system.

Change-Id: I2976e2d79bf10d4db23f60f2c6c9fddffa58a9b7
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: hjk <hjk121@nokiamail.com>