Check "." and ".." to delete all files in a dir.

Bug: 13421999
Change-Id: I9d0f65cfc9a0f18c7affc152a5b54f9970048e9c

native/jni/src/suggest/policyimpl/dictionary/utils/file_utils.cpp

@@ -68,6 +68,9 @@ namespace latinime {
         if (dirent->d_type == DT_DIR) {
             continue;
         }
+        if (strcmp(dirent->d_name, ".") == 0 || strcmp(dirent->d_name, "..") == 0) {
+            continue;
+        }
         const int filePathBufSize = getFilePathBufSize(dirPath, dirent->d_name);
         char filePath[filePathBufSize];
         getFilePath(dirPath, dirent->d_name, filePathBufSize, filePath);