add missing exception string argument

Author: flyingsilverfin

query/TypeQLMatch.java

@@ -204,7 +204,7 @@ private void filtersAreInScope() {
             if (!namedVariablesUnbound().contains(var))
                 throw TypeQLException.of(VARIABLE_OUT_OF_SCOPE_MATCH.message(var));
             if (!var.isNamed()) throw TypeQLException.of(VARIABLE_NOT_NAMED.message(var));
-            if (duplicates.contains(var)) throw TypeQLException.of(ILLEGAL_FILTER_VARIABLE_REPEATING);
+            if (duplicates.contains(var)) throw TypeQLException.of(ILLEGAL_FILTER_VARIABLE_REPEATING.message(var));
             else duplicates.add(var);
         }
     }