Fix more warnings on linux

Source/core/platform/animation/TimingFunction.h

Index: Source/core/platform/animation/TimingFunction.h
diff --git a/Source/core/platform/animation/TimingFunction.h b/Source/core/platform/animation/TimingFunction.h
index 39ce2b40bfc6523cd492ae701eefefc41c698288..71608fdbf6528c6c451199672159b5094b9b0c0c 100644
--- a/Source/core/platform/animation/TimingFunction.h
+++ b/Source/core/platform/animation/TimingFunction.h
@@ -274,7 +274,7 @@ public:
         RELEASE_ASSERT_WITH_MESSAGE(fraction >= 0 && fraction <= 1, "Web Animations not yet implemented: Timing function behavior outside the range [0, 1] is not yet specified");
         ASSERT(!m_segments.isEmpty());
         ASSERT(m_segments.last().max() == 1);
-        const Segment* segment;
+        const Segment* segment = 0;

[Inactive, 2013/10/29 13:56:20]

Maybe we could rewrite this so that it looks less dangerous:
ASSERT(!m_segments.isEmpty());
ASSERT(m_segments.last().max() == 1);
size_t i = 0;
const Segment* segment = &m_segments[i++];
while (fraction >= segment->max() && i < m_segments.size())
    segment = &m_segments[i++];
return segment->evaluate(fraction, accuracy);

         for (size_t i = 0; i < m_segments.size(); ++i) {
             segment = &m_segments[i];
             if (fraction < segment->max())