call newOneOff instead of oneOff

calling the latter instead of the former walked off the end of the
array causing mysterious bugs

TODO: safeguard against NaNs in the input

BUG=

Review URL: https://codereview.chromium.org/19280002

git-svn-id: http://skia.googlecode.com/svn/trunk@10093 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed