FIG. 1 is a front perspective view of our new design for a shower control;

FIG. 2 is a right side view thereof, the left side being the same as the right side;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof, the bottom view being the same as the top view; and,

FIG. 5 is a rear view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design.