Issue #418 and/or detection fix

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

@@ -2004,12 +2004,12 @@ public class Graph {
                             if (onTrue.size() == 2) {
                                 GraphTargetItem rightSide = ((PushItem) onTrue.get(1)).value;
                                 GraphTargetItem prevExpr = stack.pop();
-                                GraphTargetItem leftSide = expr;
+                                GraphTargetItem leftSide = expr.getNotCoercedNoDup();
 
                                 if (leftSide instanceof DuplicateItem) {
                                     isIf = false;
                                     stack.push(new OrItem(null, prevExpr, rightSide));
-                                } else if (leftSide.invert(null) instanceof DuplicateItem) {
+                                } else if (leftSide.invert(null).getNotCoercedNoDup() instanceof DuplicateItem) {
                                     isIf = false;
                                     stack.push(new AndItem(null, prevExpr, rightSide));
                                 } else if (prevExpr instanceof FalseItem) {

libsrc/ffdec_lib/src/com/jpexs/decompiler/graph/GraphTargetItem.java

@@ -250,6 +250,10 @@ public abstract class GraphTargetItem implements Serializable, Cloneable {
         return this;
     }
 
+    public GraphTargetItem getNotCoercedNoDup() {
+        return getNotCoerced();
+    }
+
     public GraphTargetItem getThroughRegister() {
         return this;
     }

libsrc/ffdec_lib/src/com/jpexs/decompiler/graph/model/DuplicateItem.java

@@ -57,6 +57,11 @@ public class DuplicateItem extends GraphTargetItem implements SimpleValue {
         return value.getNotCoerced();
     }
 
+    @Override
+    public GraphTargetItem getNotCoercedNoDup() {
+        return this;
+    }
+
     @Override
     public GraphTargetItem getThroughRegister() {
         return value.getThroughRegister();

libsrc/ffdec_lib/src/com/jpexs/decompiler/graph/model/PushItem.java

@@ -62,4 +62,9 @@ public class PushItem extends GraphTargetItem {
     public GraphTargetItem getThroughRegister() {
         return value.getThroughRegister();
     }
+
+    @Override
+    public GraphTargetItem getNotCoercedNoDup() {
+        return value.getNotCoercedNoDup();
+    }
 }