Fix Windows force deserialization by writing ofstream in binary mode (#166)

* remove the path from the force.pt files to test if that's the erro cause

* flush the ofstream before reading it in torch

* Revert "remove the path from the force.pt files to test if that's the erro cause"

This reverts commit 23206b5.

* close the file handler

* write to file in binary mode. might be required for line breaks on Windows

Author: stefdoerr

serialization/src/TorchForceProxy.cpp

@@ -111,7 +111,9 @@ void* TorchForceProxy::deserialize(const SerializationNode& node) const {
     } else {
         const string storedEncodedFile = node.getStringProperty("encodedFileContents");
         string fileName = tmpnam(nullptr); // A unique filename
-        ofstream(fileName) << hexDecode(storedEncodedFile);
+        ofstream ofs = ofstream(fileName, ios::binary);
+        ofs << hexDecode(storedEncodedFile);
+        ofs.close();
         auto model = torch::jit::load(fileName);
         std::remove(fileName.c_str());
         force = new TorchForce(model);