Memory Leak With consul client

#### Overview of the Issue

We use Consul with Haproxy and the consul client sometimes eats all the memory in the server and gets killed due to Out Of memory.


#### Reproduction Steps

It usually happens when we restart the consul client.

### Consul info for both Client and Server

Client info

We use the latest consul client (1.11.4)

Server info
Consul v1.10.2
Revision 3cb6eeedb
Protocol 2 spoken by default, understands 2 to 3 (agent will automatically use protocol >2 when speaking to compatible agents)

### Operating system and Environment details

We use Centos 7

### Log Fragments

[consul-debug-2022-03-16T11-15-39+0700.tar.gz](https://github.com/hashicorp/consul/files/8259017/consul-debug-2022-03-16T11-15-39%2B0700.tar.gz)

Start by reviewing the attached Consul debug archive and reproducing the issue while restarting the Consul client. Trace the memory growth and verify that repeated restarts no longer cause unbounded memory use or an out-of-memory kill.

Written by the indexing model from the issue text.