
    Commonwealth v. Walker, Appellant.
    Submitted December 8, 1971.
    
      Anne F. Johnson and John W. Packel, Assistant Defenders, and Vincent J. Ziccardi, Defender, for appellant; Milton M. Stein, Assistant District Attorney, James D. Crawford, Deputy District Attorney, Richard A. Sprague, First Assistant District Attorney, and Arlen Specter, District Attorney, for Commonwealth, appellee.
   Order affirmed.  