ptrace: Allow failing personality() call, but warn for it

src/engines/ptrace_linux.cc

@@ -200,7 +200,7 @@ bool ptrace_sys::disable_aslr(void)
  if (personality(persona) < 0)
  {
  perror("Can't set personality");
- return false;
+ // But still return OK, to try to run the program
  }
  return true;
 }