Use AronClassFromAron()

source/RobotAPI/libraries/armem/util/util.h

@@ -62,9 +62,7 @@ namespace armarx::armem
 
         try
         {
-            AronClass t;
-            t.fromAron(item.data());
-            return t;
+            return AronClass::FromAron(item.data());
         }
         catch (const armarx::aron::error::AronException&)
         {

source/RobotAPI/libraries/armem_robot_state/client/common/RobotReader.cpp

@@ -294,9 +294,7 @@ namespace armarx::armem::robot_state
 
         try
         {
-            AronClass t;
-            t.fromAron(item.data());
-            return t;
+            return AronClass::FromAron(item.data());
         }
         catch (const armarx::aron::error::AronException&)
         {