Refactoring: extract PtNode array reading logic form helper.

Bug: 12810574
Change-Id: I2d2660871862f11630c3ad7bf04bb49ade57c1e7
diff --git a/native/jni/NativeFileList.mk b/native/jni/NativeFileList.mk
index c7061c8..e9efde9 100644
--- a/native/jni/NativeFileList.mk
+++ b/native/jni/NativeFileList.mk
@@ -65,7 +65,8 @@
         ver4_patricia_trie_node_writer.cpp \
         ver4_patricia_trie_policy.cpp \
         ver4_patricia_trie_reading_utils.cpp \
-        ver4_patricia_trie_writing_helper.cpp) \
+        ver4_patricia_trie_writing_helper.cpp \
+        ver4_pt_node_array_reader.cpp) \
     $(addprefix suggest/policyimpl/dictionary/structure/v4/content/, \
         bigram_dict_content.cpp \
         probability_dict_content.cpp \