Prevent a segfault on alpha and any other arch that doesn't always get
zero-initialized automatics.  Frankly the code in this segment looks
pretty broken to me, but I'm just fixing the segfault...

07 Feb 2004 agriffis

--- id3v2-0.1.9/id3v2.cpp.alpha	2003-02-25 11:28:20.000000000 -0500
+++ id3v2-0.1.9/id3v2.cpp	2004-02-07 22:28:39.000000000 -0500
@@ -409,7 +409,7 @@
         {
           // check if there is a total track number and if we only have 
           // the track number for this file.  In this case combine them.
-          char *currentTrackNum, *newTrackNum;
+          char *currentTrackNum, *newTrackNum = NULL;
 
           if (pFrame != NULL) 
           {