wavelan: avoid index past end of array if DEBUG_SHOW_UNUSED is defined

Reported by Daniel Marjamäki <danielm77@spray.se> here:

	http://bugzilla.kernel.org/show_bug.cgi?id=10588

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wavelan.c b/drivers/net/wireless/wavelan.c
index 03384a4..49ae970 100644
--- a/drivers/net/wireless/wavelan.c
+++ b/drivers/net/wireless/wavelan.c
@@ -908,9 +908,9 @@
 	     p->psa_call_code[3], p->psa_call_code[4], p->psa_call_code[5],
 	     p->psa_call_code[6], p->psa_call_code[7]);
 #ifdef DEBUG_SHOW_UNUSED
-	printk(KERN_DEBUG "psa_reserved[]: %02X:%02X:%02X:%02X\n",
+	printk(KERN_DEBUG "psa_reserved[]: %02X:%02X\n",
 	       p->psa_reserved[0],
-	       p->psa_reserved[1], p->psa_reserved[2], p->psa_reserved[3]);
+	       p->psa_reserved[1]);
 #endif				/* DEBUG_SHOW_UNUSED */
 	printk(KERN_DEBUG "psa_conf_status: %d, ", p->psa_conf_status);
 	printk("psa_crc: 0x%02x%02x, ", p->psa_crc[0], p->psa_crc[1]);