Fix typo causing duplicate elements to appear

Belonging to [master]:
  - #2099
  - OpenModelica/OpenModelica-testsuite#815

Author: sjoelund

Compiler/Parsers/SimpleModelicaParser.mo

@@ -2367,7 +2367,7 @@ algorithm
               lst2 := {};
               for l2 in lst loop
                 try
-                  lst2 := List.getMemberOnTrue(l1, deleted, compare)::lst2;
+                  lst2 := List.getMemberOnTrue(l2, deleted, compare)::lst2;
                 else
                   lst2 := l2::lst2;
                 end try;