10703 smatch unreachable code checking needs reworking
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>

*** 1921,1931 ****
  
          /*
           * Now we are done with the startup thread, so free it up.
           */
          thread_exit();
-         panic("mp_startup: cannot return");
          /*NOTREACHED*/
  }
  
  /*
   * Startup function for 'other' CPUs at boot time (besides boot cpu).
--- 1921,1930 ----