Fix the build.

Change-Id: I71e77cb3c124b31b81d952dc3897ebc414a1f701

core/jni/android/graphics/BitmapFactory.cpp

@@ -465,7 +465,8 @@ static jobject nativeDecodeAsset(JNIEnv* env, jobject clazz,
                                  jobject options) { // BitmapFactory$Options
     SkStream* stream;
     Asset* asset = reinterpret_cast<Asset*>(native_asset);
-    if (optionsPurgeable(env, options)) {
+    bool forcePurgeable = optionsPurgeable(env, options);
+    if (forcePurgeable) {
         // if we could "ref/reopen" the asset, we may not need to copy it here
         // and we could assume optionsShareable, since assets are always RO
         stream = copyAssetToStream(asset);