Update nfinst tests.

Belonging to [master]:
  - OpenModelica/OMCompiler#2073
  - OpenModelica/OpenModelica-testsuite#803

Author: perost

flattening/modelica/scodeinst/InnerOuterDuplicate1.mo

@@ -0,0 +1,28 @@
+// name: InnerOuterDuplicate1
+// keywords: 
+// status: correct
+// cflags: -d=newInst
+//
+// Tests that having duplicate outer elements due to inheritance works
+// correctly.
+//
+
+model A
+  outer Real x;
+end A;
+
+model B
+  extends A;
+  outer Real x;
+end B;
+
+model InnerOuterDuplicate1
+  inner Real x = 1.0;
+  B b;
+end InnerOuterDuplicate1;
+
+// Result:
+// class InnerOuterDuplicate1
+//   Real x = 1.0;
+// end InnerOuterDuplicate1;
+// endResult

flattening/modelica/scodeinst/Makefile

@@ -314,6 +314,7 @@ InnerOuter6.mo \
 InnerOuter7.mo \
 InnerOuter8.mo \
 InnerOuterClass1.mo \
+InnerOuterDuplicate1.mo \
 InnerOuterInvalidMod1.mo \
 InnerOuterInvalidMod2.mo \
 InnerOuterInvalidMod3.mo \