
    423 A.2d 1316
    Commonwealth v. Walker, Appellant.
    Submitted August 28, 1979.
    Paul R. Gettleman, for appellant; Robert Eberhardt, Assistant District Attorney, for Commonwealth, appellee.
    Before VAN der VOORT, LARSEN and LAVELLE, JJ.
    
    
      
       Justice Rolf Larsen of the Supreme Court of Pennsylvania, and Judge John E. Lavelle of the Court of Common Pleas of Schuylkill County, Pennsylvania, are sitting by designation.
    
   Affirmed.  