fix error w/ empty local indexes

Author: austencollins

serverless.component.yml

@@ -1,5 +1,5 @@
 name: aws-dynamodb
-version: 1.1.0
+version: 1.1.1
 author: ac360
 org: serverlessinc
 description: Provision an AWS DynamoDB Table

src/utils.js

@@ -18,7 +18,7 @@ async function createTable({
  AttributeDefinitions: attributeDefinitions,
  KeySchema: keySchema,
  GlobalSecondaryIndexes: globalSecondaryIndexes.length ? globalSecondaryIndexes : undefined,
- LocalSecondaryIndexes: localSecondaryIndexes,
+ LocalSecondaryIndexes: localSecondaryIndexes.length ? localSecondaryIndexes : undefined,
  BillingMode: 'PAY_PER_REQUEST'
  })
  .promise()