The ornamental design for a repeating surfacepattern for packaging, as shown and described.
The sole FIGURE is a fragmentary plan view of a repeating surface pattern
for packaging showing my new design.
The broken lines in the drawing depict the boundaries of the repeating
surface pattern for packaging as well as the packaging to which the
pattern is applied. The broken lines further indicate that the pattern
repeats indeterminately in one or more directions. The broken lines form
no part of the claimed design.