Fix build with SK_SUPPORT_UNITTEST on

src/animator/SkScriptTokenizer.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkScript2.h"
 #include "SkData.h"
 #include "SkFloatingPoint.h"
@@ skipping 1461 matching lines @@
     testInt(0&&1?2:3)
     , {    "123.5", SkOperand2::kScalar, 0, SkIntToScalar(123) + SK_Scalar1/2, NULL }
 };
 
 #define SkScriptNAnswer_testCount    SK_ARRAY_COUNT(scriptTests)
 #endif  // SK_SUPPORT_UNITTEST
 
 void SkScriptEngine2::UnitTest() {
 #if defined(SK_SUPPORT_UNITTEST)
     ValidateDecompileTable();
-    for (int index = 0; index < SkScriptNAnswer_testCount; index++) {
+    for (size_t index = 0; index < SkScriptNAnswer_testCount; index++) {
         SkScriptEngine2 engine(scriptTests[index].fType);
         SkScriptValue2 value;
         const char* script = scriptTests[index].fScript;
         const char* scriptPtr = script;
         SkASSERT(engine.evaluateScript(&scriptPtr, &value) == true);
         SkASSERT(value.fType == scriptTests[index].fType);
         SkScalar error;
         switch (value.fType) {
             case SkOperand2::kS32:
                 if (value.fOperand.fS32 != scriptTests[index].fIntAnswer)
                     SkDEBUGF(("script '%s' == value %d != expected answer %d\n", script, value.fOperand.fS32, scriptTests[index].fIntAnswer));
                 SkASSERT(value.fOperand.fS32 == scriptTests[index].fIntAnswer);
                 break;
             case SkOperand2::kScalar:
                 error = SkScalarAbs(value.fOperand.fScalar - scriptTests[index].fScalarAnswer);
                 if (error >= SK_Scalar1 / 10000)
                     SkDEBUGF(("script '%s' == value %g != expected answer %g\n", script, value.fOperand.fScalar / (1.0f * SK_Scalar1), scriptTests[index].fScalarAnswer / (1.0f * SK_Scalar1)));
                 SkASSERT(error < SK_Scalar1 / 10000);
                 break;
             case SkOperand2::kString:
                 SkASSERT(value.fOperand.fString->equals(scriptTests[index].fStringAnswer));
                 break;
             default:
                 SkASSERT(0);
         }
     }
 #endif  // SK_SUPPORT_UNITTEST
 }
 #endif  // SK_DEBUG