Fix unused variable warnings in HarfBuzzShaperBase
This was failing on ChromiumOS builds: http://build.chromium.org/p/chromium.chromiumos/builders/ChromiumOS%20%28tegra2%29/builds/4524/steps/cbuildbot/logs/stdio --SNIP-- third_party/WebKit/Source/WebCore/platform/graphics/harfbuzz/HarfBuzzShaperBase.cpp: In function 'void WebCore::normalizeSpacesAndMirrorChars(const UChar*, UChar*, int, WebCore::HarfBuzzShaperBase::NormalizeMode)': chromeos-chrome-19.0.1053.0_alpha-r1: third_party/WebKit/Source/WebCore/platform/graphics/harfbuzz/HarfBuzzShaperBase.cpp:58:10: error: variable 'error' set but not used [-Werror=unused-but-set-variable] chromeos-chrome-19.0.1053.0_alpha-r1: cc1plus: all warnings being treated as errors --SNIP--
Created attachment 128874 [details] Patch
Created attachment 128875 [details] Use ASSERT_UNUSED
Committed r108903: <http://trac.webkit.org/changeset/108903>