Fix declaration and code thingie

Originally committed as revision 7140 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/amr.c

@@ -625,8 +625,9 @@ static int amr_wb_encode_close(AVCodecContext * avctx)
 static int amr_wb_encode_frame(AVCodecContext *avctx,
                             unsigned char *frame/*out*/, int buf_size, void *data/*in*/)
 {
-    AMRWBContext *s = (AMRWBContext*) avctx->priv_data;
+    AMRWBContext *s;
     int size;
+    s = (AMRWBContext*) avctx->priv_data;
     s->mode=getWBBitrateMode(avctx->bit_rate);
     size = E_IF_encode(s->state, s->mode, data, frame, s->allow_dtx);
     return size;