quote prefixed tables using iodata not an interpreted string

Author: sbaildon

lib/ecto/adapters/sqlite3/connection.ex

@@ -1946,7 +1946,7 @@ defmodule Ecto.Adapters.SQLite3.Connection do
   defp quote_table(nil, name), do: quote_entity(name)
 
   defp quote_table(prefix, name) when is_atom(prefix) or is_binary(prefix) do
-    "#{prefix}.#{name}"
+    [prefix, ?., name]
   end
 
   defp quote_table(_, name), do: quote_entity(name)