The ornamental design for a windshieldwiperprotector, as shown and described.
FIG. 1 is a perspective view of a windshield wiper protector installed on a windshield wiper.
FIG. 2 is a perspective view of the windshield wiper protector of FIG. 1 with the end cap removed.
FIG. 3 is a top plan view thereof.
FIG. 4 is a bottom plan view thereof.
FIG. 5 is a right side view thereof.
FIG. 6 is a left side view thereof.
FIG. 7 is a front view thereof; and,
FIG. 8 is a rear view thereof.
The broken lines showing a windshield wiper in FIG. 1 are included for the purpose of illustrating the environment of the article and form no part of the claimed design.