staging/qlge: remove initialising of static local variable

This patch fixes "ERROR: do not initialise statics to 0" by checkpatch.pl.
Signed-off-by: Dorothea Ehrl <dorothea.ehrl@fau.de>
Co-developed-by: Vanessa Hack <vanessa.hack@fau.de>
Signed-off-by: Vanessa Hack <vanessa.hack@fau.de>
Link: https://lore.kernel.org/r/20191127123052.16424-1-dorothea.ehrl@fau.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/qlge/qlge_main.c

@@ -4578,7 +4578,7 @@ static int qlge_probe(struct pci_dev *pdev,
 {
 	struct net_device *ndev = NULL;
 	struct ql_adapter *qdev = NULL;
-	static int cards_found = 0;
+	static int cards_found;
 	int err = 0;
 
 	ndev = alloc_etherdev_mq(sizeof(struct ql_adapter),