twolame: set pf_encode at the end

modules/codec/twolame.c

@@ -161,7 +161,6 @@ static int OpenEncoder( vlc_object_t *p_this )
         return VLC_ENOMEM;
     p_enc->p_sys = p_sys;
 
-    p_enc->pf_encode_audio = Encode;
     p_enc->fmt_in.i_codec = VLC_CODEC_S16N;
 
     p_enc->fmt_out.i_cat = AUDIO_ES;
@@ -238,6 +237,8 @@ static int OpenEncoder( vlc_object_t *p_this )
         return -VLC_EGENERIC;
     }
 
+    p_enc->pf_encode_audio = Encode;
+
     p_sys->i_nb_samples = 0;
 
     return VLC_SUCCESS;