
    Commonwealth v. Walker, Appellant.
    Submitted April 12, 1971.
    
      SalUe Ann Radick and John J. Dean, Assistant Public Defenders, and George E. Ross, Public Defender, for appellant;
    
      Cm-ol Mwy Los, Assistant District Attorney, and Robert W. Duggan, District Attorney, for Commonwealth, appellee.
   Order affirmed.  