i2o: use kstrdup()

diff -u -p a/drivers/message/i2o/memory.c b/drivers/message/i2o/memory.c
@@ -270,10 +270,9 @@ EXPORT_SYMBOL_GPL(i2o_dma_realloc);
 int i2o_pool_alloc(struct i2o_pool *pool, const char *name,
 				 size_t size, int min_nr)
 {
-	pool->name = kmalloc(strlen(name) + 1, GFP_KERNEL);
+	pool->name = kstrdup(name, GFP_KERNEL);
 	if (!pool->name)
 		goto exit;
-	strcpy(pool->name, name);
 
 	pool->slab =
 	    kmem_cache_create(pool->name, size, 0, SLAB_HWCACHE_ALIGN, NULL);