fuser: a now, the corrected fix (vda botched previous one)

diff --git a/procps/fuser.c b/procps/fuser.c
index 663abe4..55f7917 100644
--- a/procps/fuser.c
+++ b/procps/fuser.c
@@ -216,6 +216,7 @@
 	pid_t pid;
 	pid_list *plist;
 
+	xchdir("/proc");
 	d = opendir("/proc");
 	if (!d)
 		return NULL;