The ornamental design for a nursingscarf, as shown and described.
FIG. 1 is a top view of a nursing scarf;
FIG. 2 is a bottom view thereof;
FIG. 3 is a side view thereof;
FIG. 4 is another side view thereof;
FIG. 5 is a perspective view thereof, in a position of use; and,
FIG. 6 is a perspective view thereof in a second position of use.
The broken lines in FIG. 1 are included for the purpose of illustrating portions of the nursing scarf and form no part of the claimed design. The broken lines shown in FIGS. 5 and 6 represent a person(s) are included for the purpose of illustrating environment and form no part of the claimed design.