Fix some VS2010 warnings
Review URL: http://codereview.appspot.com/5155043




git-svn-id: http://skia.googlecode.com/svn/trunk@2380 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pdf/SkBitSet.cpp b/src/pdf/SkBitSet.cpp
index c10c100..b47bce2 100755
--- a/src/pdf/SkBitSet.cpp
+++ b/src/pdf/SkBitSet.cpp
@@ -67,7 +67,7 @@
 
 bool SkBitSet::isBitSet(int index) const {
     uint32_t mask = 1 << (index % 32);
-    return (*internalGet(index) & mask);
+    return 0 != (*internalGet(index) & mask);
 }
 
 bool SkBitSet::orBits(const SkBitSet& source) {