PM / hibernate: Add missing braces in __register_nosave_region()

One branch of an if/else statement in __register_nosave_region() is
formatted against the kernel coding style which causes the code to
look slightly odd.  To fix that, add missing braces to it.

No functional changes.
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

kernel/power/snapshot.c

@@ -920,9 +920,10 @@ void __init __register_nosave_region(unsigned long start_pfn,
 		/* During init, this shouldn't fail */
 		region = kmalloc(sizeof(struct nosave_region), GFP_KERNEL);
 		BUG_ON(!region);
-	} else
+	} else {
 		/* This allocation cannot fail */
 		region = memblock_virt_alloc(sizeof(struct nosave_region), 0);
+	}
 	region->start_pfn = start_pfn;
 	region->end_pfn = end_pfn;
 	list_add_tail(&region->list, &nosave_regions);