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Fix advance_buffer problem with large ID3v2 tags. Patch by Mike Crowe

--- a/frontend/main.c

+++ b/frontend/main.c

@@ -25,7 +25,7 @@

 ** Commercial non-GPL licensing of this software is possible.

 ** For more info contact Nero AG through Mpeg4AAClicense@nero.com.

 **

-** $Id: main.c,v 1.88 2012/03/04 09:59:02 knik Exp $

+** $Id: main.c,v 1.89 2015/01/19 09:46:12 knik Exp $

 **/

 #ifdef _WIN32

@@ -132,11 +132,18 @@

 static void advance_buffer(aac_buffer *b, int bytes)

 {

-    b->file_offset += bytes;

-    b->bytes_consumed = bytes;

-    b->bytes_into_buffer -= bytes;

-	if (b->bytes_into_buffer < 0)

-		b->bytes_into_buffer = 0;

+    while ((b->bytes_into_buffer > 0) && (bytes > 0))

+    {

+	int chunk = min(bytes, b->bytes_into_buffer);

+	

+	bytes -= chunk;

+	b->file_offset += chunk;

+	b->bytes_consumed = chunk;

+	b->bytes_into_buffer -= chunk;

+

+	if (b->bytes_into_buffer == 0)

+	    fill_buffer(b);

+    }

 }

 static void lookforheader(aac_buffer *b)