The ornamental design for a golfbag side pocket, as shown and described.
FIG. 1 is a perspective view of the golf bag side pocket of this invention;
FIG. 2 is a rear view of the golf bag side pocket of this invention;
FIG. 3 is a first side view of the golf bag side pocket of this invention;
FIG. 4 is a front view of the golf bag side pocket of this invention;
FIG. 5 is a second side view of the golf bag side pocket of this invention;
FIG. 6 is a bottom plan view of the golf bag side pocket of this invention; and,
FIG. 7 is a top plan view of the golf bag side pocket of this invention.
In FIGS. 1-7, the broken lines showing other portions of the golf bag are for purposes of illustrating environment and form no part of the claimed design.