message: Fix flakiness in lldb lit test
  Messages "breakpoint locations added" and "process stopped" may come out of order.
diff: # CHECK: Breakpoint 1: no locations (pending).
  # CHECK: (lldb) run -jit-kind=mcjit {{.*}}/jitbp_elf.test.tmp.ll
  -# CHECK: 1 location added to breakpoint 1
  # CHECK: Process {{.*}} stopped
  # CHECK: JIT(0x{{.*}})`jitbp:
  # CHECK: Process {{.*}} launched: {{.*}}
  