Don't crash when unhandled upstream event is received

README.md

@@ -15,7 +15,7 @@ The package can be installed by adding `membrane_file_plugin` to your list of de
 ```elixir
 def deps do
   [
-    {:membrane_file_plugin, "~> 0.17.1"}
+    {:membrane_file_plugin, "~> 0.17.2"}
   ]
 end
 ```

lib/membrane_file/source.ex

@@ -109,6 +109,11 @@ defmodule Membrane.File.Source do
     raise "Cannot handle `Membrane.File.SeekSourceEvent` in a `#{__MODULE__}` with `seekable?: false` option."
   end
 
+  @impl true
+  def handle_event(:output, _event, _ctx, state) do
+    {[], state}
+  end
+
   @impl true
   def handle_demand(:output, _size, :buffers, _ctx, %{chunk_size: chunk_size} = state),
     do: supply_demand(chunk_size, [redemand: :output], state)

mix.exs

@@ -1,7 +1,7 @@
 defmodule Membrane.File.Plugin.Mixfile do
   use Mix.Project
 
-  @version "0.17.1"
+  @version "0.17.2"
 
   @github_url "https://github.com/membraneframework/membrane_file_plugin"