Fix issue when converting fil->tl.

We should call ResourceTable::getLocales directly,
and not AssetManager::getLocales. The latter will convert
"tl" to "fil" so we'll end up thinking we have resources
for "fil" when we don't really have any.

bug: 15873165

Change-Id: I9753e4608aaecede328a40ee1f3ee6b016d0dedc
diff --git a/libs/androidfw/AssetManager.cpp b/libs/androidfw/AssetManager.cpp
index 482dfc8..56c95bd 100644
--- a/libs/androidfw/AssetManager.cpp
+++ b/libs/androidfw/AssetManager.cpp
@@ -365,7 +365,6 @@
         delete[] mLocale;
     }
 
-
     // If we're attempting to set a locale that starts with "fil",
     // we should convert it to "tl" for backwards compatibility since
     // we've been using "tl" instead of "fil" prior to L.
@@ -374,7 +373,10 @@
     // instead of attempting a fallback.
     if (strncmp(locale, kFilPrefix, kFilPrefixLen) == 0) {
         Vector<String8> locales;
-        getLocales(&locales);
+        ResTable* res = mResources;
+        if (res != NULL) {
+            res->getLocales(&locales);
+        }
         const size_t localesSize = locales.size();
         bool hasFil = false;
         for (size_t i = 0; i < localesSize; ++i) {