auditsc: Use kzalloc instead of kmalloc+memset.

  In function audit_alloc_context(), use kzalloc, instead of kmalloc+memset. Patch also renames audit_zero_context() to
audit_set_context(), to represent it's inner workings properly.
Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Eric Paris <eparis@redhat.com>

kernel/auditsc.c

@@ -1048,10 +1048,9 @@ static inline void audit_free_aux(struct audit_context *context)
 	}
 }
 
-static inline void audit_zero_context(struct audit_context *context,
+static inline void audit_set_context(struct audit_context *context,
 				      enum audit_state state)
 {
-	memset(context, 0, sizeof(*context));
 	context->state      = state;
 	context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;
 }
@@ -1060,9 +1059,10 @@ static inline struct audit_context *audit_alloc_context(enum audit_state state)
 {
 	struct audit_context *context;
 
-	if (!(context = kmalloc(sizeof(*context), GFP_KERNEL)))
+	context = kzalloc(sizeof(*context), GFP_KERNEL);
+	if (!context)
 		return NULL;
-	audit_zero_context(context, state);
+	audit_set_context(context, state);
 	INIT_LIST_HEAD(&context->killed_trees);
 	INIT_LIST_HEAD(&context->names_list);
 	return context;