Gdbserver: Fix catch-all exception handler.
Gdbserver: Fix catch-all exception handler.

flit/pyOCD,mesheven/pyOCD,mbedmicro/pyOCD,mbedmicro/pyOCD,pyocd/pyOCD,flit/pyOCD,mesheven/pyOCD,mbedmicro/pyOCD,mesheven/pyOCD,pyocd/pyOCD