Clang has stricter checking for conversion to a null pointer.  In C++11 mode, false will produce an error if it is used in a place that expects a pointer.  Change these cases to NULL.

R=reed@google.com, robertphillips@google.com

Author: rtrieu@google.com

Review URL: https://chromiumcodereview.appspot.com/18118004

git-svn-id: http://skia.googlecode.com/svn/trunk@9800 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkScriptRuntime.cpp b/src/animator/SkScriptRuntime.cpp
index f287850..061847e 100644
--- a/src/animator/SkScriptRuntime.cpp
+++ b/src/animator/SkScriptRuntime.cpp
@@ -200,13 +200,13 @@
             operand[0].fScalar = SkScriptEngine2::IntToScalar(operand[op - SkScriptEngine2::kIntToScalar].fS32);
             break;
         case SkScriptEngine2::kStringToInt:
-            if (SkParse::FindS32(operand[0].fString->c_str(), &operand[0].fS32) == false)
+            if (SkParse::FindS32(operand[0].fString->c_str(), &operand[0].fS32) == NULL)
                 return false;
             break;
         case SkScriptEngine2::kStringToScalar:
         case SkScriptEngine2::kStringToScalar2:
             if (SkParse::FindScalar(operand[0].fString->c_str(),
-                    &operand[op - SkScriptEngine2::kStringToScalar].fScalar) == false)
+                    &operand[op - SkScriptEngine2::kStringToScalar].fScalar) == NULL)
                 return false;
             break;
         case SkScriptEngine2::kScalarToInt: