What is claimed is the ornamental design for a bed rail cover, as shown and described.
FIG. 1 is a front perspective view of the bed rail cover of the present invention.
FIG. 2 is a front elevation view of the bed rail cover of the present invention; and,
FIG. 3 is a side elevation view of the bed rail cover of the present invention.
The broken line showing of parts of the drawings is included for illustrating use and environment and forms no part of the claimed design. However, the broken lines around the circumference of the rectangular pockets, illustrated in FIG. 1, represent stitching and are part of the claimed design.