Whoops forgot to add sloperoll and slopepitch to precipmobj_t

src/p_mobj.h

@@ -462,6 +462,7 @@ struct precipmobj_t
 
 	// More drawing info: to determine current sprite.
 	angle_t angle, pitch, roll; // orientation
+	angle_t slopepitch, sloperoll;
 	angle_t old_angle, old_pitch, old_roll; // orientation interpolation
 	angle_t old_angle2, old_pitch2, old_roll2;
 	angle_t rollangle;