- fixed bug related to test case SrvN1c: GetDataDirectory returns wrong variable specification for non-existent sub variable e.g. Mod.ctlModel.XYZ

src/mms/iso_mms/common/mms_type_spec.c

@@ -165,6 +165,8 @@ MmsVariableSpecification_getNamedVariableRecursive(MmsVariableSpecification* var
 
                 namedVariable = MmsVariableSpecification_getNamedVariableRecursive(namedVariable, separator + 1);
             }
+            else /* ERROR: request for a child element of a simple (leaf-node) variable */
+                return NULL;
         }
 
         return namedVariable;