The ornamental design for a hoppermate for drywall texturing gun, as shown and described.
FIG. 1 is a top perspective view for a hopper mate for a drywall texturing gun showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a right side view thereof; and,
FIG. 8 is a bottom perspective view thereof.
The broken lines in FIG. 1 depict environmental subject matter of a drywall texturing gun and is shown for the convenience of illustration only and form no part of the claimed design.