Add possibility for optional inputs to be associated without having any element

src/operator/Resize.cpp

@@ -51,7 +51,8 @@ bool Resize_Op::forwardDims(bool allowDataDependency) {
         return false;
     }
 
-    if (!inputsAssociated()) {
+    // Some optional input may be linked but undefined because of ONNX import
+    if (!inputsAssociated(false)) {
         return false;
     }