Removed unwanted whitespace

moto/elb/responses.py

@@ -459,9 +459,7 @@ DESCRIBE_LOAD_BALANCERS_TEMPLATE = """<DescribeLoadBalancersResponse xmlns="http
           </BackendServerDescriptions>
           <Subnets>
           {% for subnet in load_balancer.subnets %}
-              <member>
-              {{ subnet }}
-              </member>
+              <member>{{ subnet }}</member>
           {% endfor %}
           </Subnets>
         </member>

tests/test_elb/test_elb.py

@@ -742,5 +742,6 @@ def test_subnets():
 
     lb = client.describe_load_balancers()['LoadBalancerDescriptions'][0]
     lb.should.have.key('Subnets').which.should.have.length_of(1)
+    lb['Subnets'][0].should.equal(subnet.id)
 
     lb.should.have.key('VPCId').which.should.equal(vpc.id)