The ornamental design for a hosecouplingguard, as shown and described.
FIG. 1 is a front perspective view of a hose coupling guard showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left elevation view thereof;
FIG. 5 is a right elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawings are for the purpose of illustrating unclaimed portions of the hose coupling guard and form no part of the claimed design.