Fixed Aidge::Memorize_Op::Memorize_Op()

src/operator/Memorize.cpp

@@ -94,7 +94,7 @@ Aidge::Memorize_Op::Memorize_Op(const Aidge::Memorize_Op& op)
     if (!op.backend().empty()) {
         SET_IMPL_MACRO(Memorize_Op, *this, op.backend());
     } else {
-        mImpl = nullptr;
+        mImpl = std::make_shared<Memorize_OpImpl>(*this);
     }
     mOutputs[1] = mOutputs[0];
 }