I claim the ornamental design for a hockey stick frame, as shown and described.
FIG. 1 is a perspective view of a hockey stick frame, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left-side elevational view thereof;
FIG. 5 is a right-side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines showing a team logo, mat cut-out, and player number in FIGS. 1 and 2, and a portion of the back surface of FIG. 3, depict environmental matter and form no part of the claimed design.