fix warning from scalar --> int32 conversion

BUG=

Review URL: https://codereview.appspot.com/7065050

git-svn-id: http://skia.googlecode.com/svn/trunk@7061 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkAnimateActive.cpp b/src/animator/SkAnimateActive.cpp
index 00ee9df..32dd1fb 100644
--- a/src/animator/SkAnimateActive.cpp
+++ b/src/animator/SkAnimateActive.cpp
@@ -174,7 +174,7 @@
         if (animate->formula.size() > 0) {
             SkTDOperandArray values;
             values.setCount(count);
-            bool success = animate->fFieldInfo->setValue(fMaker, &values, 0, 0, NULL,
+            SkDEBUGCODE(bool success = ) animate->fFieldInfo->setValue(fMaker, &values, 0, 0, NULL,
                 animate->getValuesType(), animate->formula);
             SkASSERT(success);
             fApply.applyValues(index, values.begin(), count, animate->getValuesType(), time);
@@ -212,7 +212,7 @@
             if (animate->formula.size() > 0) {
                 SkTDOperandArray values;
                 values.setCount(count);
-                bool success = animate->fFieldInfo->setValue(fMaker, &values, 0, 0, NULL,
+                SkDEBUGCODE(bool success = ) animate->fFieldInfo->setValue(fMaker, &values, 0, 0, NULL,
                     animate->getValuesType(), animate->formula);
                 SkASSERT(success);
                 fApply.applyValues(index, values.begin(), count, animate->getValuesType(), time);