$OpenBSD: patch-doc_examples_transcode_aac_c,v 1.1 2014/05/16 01:34:50 brad Exp $

Fix building this example.

https://trac.ffmpeg.org/ticket/3613

--- doc/examples/transcode_aac.c.orig	Tue May  6 00:21:42 2014
+++ doc/examples/transcode_aac.c	Tue May  6 00:22:31 2014
@@ -52,7 +52,7 @@
  * @param error Error code to be converted
  * @return Corresponding error text (not thread-safe)
  */
-static char *const get_error_text(const int error)
+static const char *get_error_text(const int error)
 {
     static char error_buffer[255];
     av_strerror(error, error_buffer, sizeof(error_buffer));
