SkSplicer: test and fix loop logic

The new test would fail without the the change in SkSplicer.cpp to call fSpliced(x,x+body) instead of fSpliced(x,body).  The rest of the changes are cosmetic, mostly renaming n to limit.

Change-Id: Iae28802d0adb91e962ed3ee60fa5a4334bd140f9
Reviewed-on: https://skia-review.googlesource.com/6837
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
3 files changed