Patch 1163135 by Bryan Vandyke: Remove trailing spaces for ID3v2 tags

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6885 a1c6a512-1295-4272-9138-f99709370657

docs/CREDITS

@@ -121,3 +121,4 @@ Ray Lambert
 Dave Wiard
 Pieter Bos
 Konstantin Isakov
+Bryan Vandyke

firmware/id3.c

@@ -708,8 +708,12 @@ static void setid3v2title(int fd, struct mp3entry *entry)
                 
                 unicode_munge( ptag, &bytesread );
                 tag = *ptag; 
-                tag[bytesread++] = 0;
-                bufferpos += bytesread;
+                /* remove trailing spaces */
+                while ( bytesread > 0 && isspace(tag[bytesread-1]))
+                    bytesread--;
+                tag[bytesread] = 0;
+                bufferpos += bytesread + 1;
+
                 if( tr->ppFunc )
                     bufferpos = tr->ppFunc(entry, tag, bufferpos);
                 break;