[TCP]: fix memory leak in net/ipv4/tcp_probe.c::tcpprobe_read()

Based upon a patch by Jesper Juhl.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Stephen Hemminger <shemminger@osdl.org>
Acked-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/tcp_probe.c

diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index d7d517a..b343532 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -114,7 +114,7 @@
 static ssize_t tcpprobe_read(struct file *file, char __user *buf,
 			     size_t len, loff_t *ppos)
 {
-	int error = 0, cnt;
+	int error = 0, cnt = 0;
 	unsigned char *tbuf;
 
 	if (!buf || len < 0)