adding the missing in eigen_assert!

unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h
index e767d89..2be1a5a 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceSycl.h
@@ -78,7 +78,7 @@
         [](void *dataMem) { delete static_cast<Type*>(dataMem); })));
       (static_cast<Type*>(ret.first->second.get()))->set_final_data(nullptr);
     } else {
-      eigen_assert("The Device memory is not allocated please call allocate on the device is not initialised!!")
+      eigen_assert("The device memory is not allocated. Please call allocate on the device!!");
     }
     return ret;
   }