Merge pull request #11729 from murgatroid99/uv_memory_leak_fixes

src/core/lib/iomgr/resolve_address_uv.c

src/core/lib/iomgr/tcp_client_uv.c

src/core/lib/iomgr/tcp_server_uv.c

src/core/lib/iomgr/tcp_uv.c