SkOpSegment.cpp gcc 4.7 build failure.

src/pathops/SkOpSegment.cpp

Index: src/pathops/SkOpSegment.cpp
diff --git a/src/pathops/SkOpSegment.cpp b/src/pathops/SkOpSegment.cpp
index 43afa085557771ee52ad4274e93336c60592af4a..b5702cb7f8be044cec44d9a79e0a00840eb89b23 100644
--- a/src/pathops/SkOpSegment.cpp
+++ b/src/pathops/SkOpSegment.cpp
@@ -2237,7 +2237,7 @@ SkOpSegment* SkOpSegment::nextChase(int* index, const int step, int* min, SkOpSp
     const SkOpSpan& endSpan = fTs[end];
     SkOpSegment* other = endSpan.fOther;
     *index = endSpan.fOtherIndex;
-    SkASSERT(index >= 0);
+    SkASSERT(*index >= 0);
     int otherEnd = other->nextExactSpan(*index, step);
     SkASSERT(otherEnd >= 0);
     *min = SkMin32(*index, otherEnd);