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/src/com/jpexs/decompiler/graph/Graph.java

@@ -2715,6 +2715,18 @@ public class Graph {
         return printGraph(foundGotos, partCodes, partCodePos, visited, localData, stack, allParts, parent, part, stopPart, stopPartKind, loops, throwStates, null, staticOperation, path, 0);
     }
 
+    /**
+     * Gets if expression from stack.
+     * Can be overriden for custom handling
+     * @param localData Local data
+     * @param stack Stack
+     * @param output Output
+     * @return Expression
+     */
+    protected GraphTargetItem getIfExpression(BaseLocalData localData, TranslateStack stack, List<GraphTargetItem> output) {
+        return stack.pop();
+    }
+    
     /**
      * Walks graph parts and converts them to target items.
      *
@@ -3254,7 +3266,7 @@ public class Graph {
                 } //else
                 GraphPart nextOnePart = null;
                 if (getNextParts(localData, part).size() == 2 && !partIsSwitch(part)) {
-                    GraphTargetItem expr = stack.pop();
+                    GraphTargetItem expr = getIfExpression(localData, stack, currentRet);
 
                     if (nextOnePart == null) {