The ornamental design for a memorycardreader, as shown and described.
FIG. 1 is a perspective front view of a memory card reader showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear perspective view thereof; and,
FIG. 8 is a rear view thereof.
The broken lines shown in the drawings are for the purpose of illustrating unclaimed portions of the memory card reader, and form no part of the claimed design.