message: Fix memory leak related to GetStringUTFChars.
  GetStringUTFChars needs to be paired with ReleaseStringUTFChars.
diff: @@ -45,6 +45,7 @@ Java_org_tensorflow_lite_HexagonDelegate_setAdspLibraryPath(
  std::stringstream path;
  path << lib_dir_path
  << ";/system/lib/rfsa/adsp;/system/vendor/lib/rfsa/adsp;/dsp";
  + env->ReleaseStringUTFChars(native_lib_path, lib_dir_path);
  return setenv("ADSP_LIBRARY_PATH", path.str().c_str(), 1 /*override*/) == 0
  ? JNI_TRUE
  : JNI_FALSE;
  