Enable readability-container-size-empty tests

This one is a little trivial, but it does help in readability.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I5366d4eec8af2f781b3bad804131ae2eb806e3aa
diff --git a/http/http_client.hpp b/http/http_client.hpp
index 6aad0da..41c09a9 100644
--- a/http/http_client.hpp
+++ b/http/http_client.hpp
@@ -93,7 +93,7 @@
                 const boost::beast::error_code ec,
                 const std::vector<boost::asio::ip::tcp::endpoint>&
                     endpointList) {
-                if (ec || (endpointList.size() == 0))
+                if (ec || (endpointList.empty()))
                 {
                     BMCWEB_LOG_ERROR << "Resolve failed: " << ec.message();
                     self->state = ConnState::resolveFailed;