Fix issue where we couldn't have set literals in inner scopes

src/analysis/scoping_analysis.cpp

@@ -278,6 +278,7 @@ public:
     bool visit_raise(AST_Raise* node) override { return false; }
     bool visit_repr(AST_Repr* node) override { return false; }
     bool visit_return(AST_Return* node) override { return false; }
+    bool visit_set(AST_Set* node) override { return false; }
     bool visit_slice(AST_Slice* node) override { return false; }
     bool visit_str(AST_Str* node) override { return false; }
     bool visit_subscript(AST_Subscript* node) override { return false; }

test/tests/set.py

@@ -59,3 +59,7 @@ s = set(range(5))
 print len(s)
 s.clear()
 print s
+
+def f2():
+    print {5}
+f2()