The ornamental design for a curtainrodsupport, as shown and described.
FIG. 1 is a perspective view of the curtain rod wall unit for one end of a
curtain rod showing the new design; FIG. 2 is a top view; FIG. 3 is a
front view; FIG. 4 is a back view; FIG. 5 is a view from the right hand
side of FIG. 1; and, FIG. 6 is a view from the left hand side of FIG. 1.
The broken line showing of a fragmented rod is for illustrative purposes
only and forms no part of the claimed design.