Fix no sound issue with >=media-libs/libvorbis-1.2.0

diff -ruN v_1_0.orig/src/ldp-out/ldp-vldp-audio.cpp v_1_0/src/ldp-out/ldp-vldp-audio.cpp
--- v_1_0.orig/src/ldp-out/ldp-vldp-audio.cpp	2008-01-29 18:04:07.000000000 +0100
+++ v_1_0/src/ldp-out/ldp-vldp-audio.cpp	2008-09-19 13:43:10.000000000 +0200
@@ -146,7 +146,7 @@
 	switch (whence)
 	{
 	case SEEK_SET:
-		if (offset < g_audio_filesize)
+		if (offset <= g_audio_filesize)
 		{
 			// make sure offset is positive so we don't get into trouble
 			if (offset >= 0)