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/redfish-core/lib/chassis.hpp b/redfish-core/lib/chassis.hpp
index 8eb9821..7b67380 100644
--- a/redfish-core/lib/chassis.hpp
+++ b/redfish-core/lib/chassis.hpp
@@ -270,7 +270,7 @@
 
                         health->populate();
 
-                        if (connectionNames.size() < 1)
+                        if (connectionNames.empty())
                         {
                             BMCWEB_LOG_ERROR << "Got 0 Connection names";
                             continue;
@@ -375,7 +375,7 @@
                                         // so skip if it is empty
                                         if (propertyName == "SparePartNumber")
                                         {
-                                            if (*value == "")
+                                            if (value->empty())
                                             {
                                                 continue;
                                             }
@@ -514,7 +514,7 @@
                             continue;
                         }
 
-                        if (connectionNames.size() < 1)
+                        if (connectionNames.empty())
                         {
                             BMCWEB_LOG_ERROR << "Got 0 Connection names";
                             continue;