The ornamental design for a hearingaidretainer, as shown and described.
FIG. 1 is a front perspective view of the hearing aid retainer of the instant invention;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a front perspective environmental view illustrating the hearing aid retainer in use.
The broken lines in FIG. 1-3, 5, and 7 views are included for the purpose of illustrating portions of the hearing aid retainer that form no part of the claimed design, and the broken lines in FIG. 8 view represent the environment. None of the broken lines form a part of the claimed design.