drivers: base: class: Add a blank line after declarations

This patch fixes the following warning found by checkpatch.pl:
WARNING: Missing a black line after declarations

Signed-off-by: Cosmin Tomulescu <cosmintom@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/base/class.c b/drivers/base/class.c
index f96f704..6e81088 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -90,6 +90,7 @@
 			 const void *ns)
 {
 	int error;
+
 	if (cls)
 		error = sysfs_create_file_ns(&cls->p->subsys.kobj,
 					     &attr->attr, ns);
@@ -488,6 +489,7 @@
 			       struct class_attribute *attr, char *buf)
 {
 	struct class_attribute_string *cs;
+
 	cs = container_of(attr, struct class_attribute_string, attr);
 	return snprintf(buf, PAGE_SIZE, "%s\n", cs->str);
 }