Fixed minor Release & fixed point compiler warnings on Linux

http://codereview.appspot.com/6118050/



git-svn-id: http://skia.googlecode.com/svn/trunk@3766 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleAnimBlur.cpp b/samplecode/SampleAnimBlur.cpp
index 7f077e6..cada0cd 100644
--- a/samplecode/SampleAnimBlur.cpp
+++ b/samplecode/SampleAnimBlur.cpp
@@ -45,7 +45,7 @@
         };
         SkRandom random;
 
-        for (int i = 0; i < SK_ARRAY_COUNT(gStyles); ++i) {
+        for (size_t i = 0; i < SK_ARRAY_COUNT(gStyles); ++i) {
             SkMaskFilter* mf = SkBlurMaskFilter::Create(blurRadius,
                                        gStyles[i],
                                        SkBlurMaskFilter::kHighQuality_BlurFlag);