Fixed: #2270 AS3 decompilation - unnnecessary local registers assignments as part of expressions when using optimization like dup, setlocal N instead of setlocal N, getlocal N

libsrc/ffdec_lib/testdata/as3_new/src/Main.as

@@ -97,6 +97,7 @@ package
         TestNegate;
         TestNumberCall;
         TestOperations;
+        TestOptimization;
         TestOptionalParameters;
         TestParamNames;
         TestParamsCount;