bad deceleration code

; fix walk speed if we just came out of a run
   lda PlayerVXL
   bit PlayerVXH ; take the absolute value, negate the low byte if the high byte is positive
   bpl :+
     neg
   :
   cmp MaxSpeedRight
   beq NoFixWalkSpeed
   bcc NoFixWalkSpeed
   sub NovaDecelSpeed
   bit PlayerVXH ; reverse the negation from earlier if needed
   bpl :+
     neg
   :
   sta PlayerVXL
NoFixWalkSpeed: