UBUNTU: SAUCE: hio: fix mask maybe-uninitialized warning

BugLink: http://bugs.launchpad.net/bugs/1603483Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>

ubuntu/hio/hio.c

@@ -11401,7 +11401,7 @@ static int ssd_init_irq(struct ssd_device *dev)
 	static int cpu_affinity = 0;
 #endif
 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) || (defined RHEL_MAJOR && RHEL_MAJOR == 6))
-	const struct cpumask *mask;
+	const struct cpumask *mask = NULL;
 	static int cpu = 0;
 	int j;
 #endif