message: Fixing unused-variable warnning.
diff: @@ -218,12 +218,13 @@ static void calling_value_text_multiple_times(sqlite3_context *context, int argc
  char *str = (char *)sqlite3_value_text(argv[0]);
  assert(sqlite3_value_type(argv[0]) == SQLITE_TEXT);
  auto len = strlen(str);
  -
  + size_t len2;
  + char *str2;
  // calling sqlite3_value_text multiple times, i.e., 10x
  for (size_t i = 0; i < 10; ++i) {
  - char *str2 = (char *)sqlite3_value_text(argv[0]);
  + str2 = (char *)sqlite3_value_text(argv[0]);
  assert(str == str2);
  - auto len2 = strlen(str2);
  + len2 = strlen(str2);
  assert(len == len2);
  }
  len = sqlite3_value_bytes(argv[0]);
  