--- ./util/header.c.orig	2013-06-25 10:37:11.513269959 +0200
+++ ./util/header.c	2013-06-25 10:37:17.164270090 +0200
@@ -305,7 +305,7 @@
 			  const char *name, bool is_kallsyms, bool is_vdso)
 {
 	const size_t size = PATH_MAX;
-	char *realname, *filename = zalloc(size),
+	char *realname = NULL, *filename = zalloc(size),
 	     *linkname = zalloc(size), *targetname;
 	int len, err = -1;
 	bool slash = is_kallsyms || is_vdso;