Updated uploadController.js

The GET task of URL uploads will now limit the maximum size of the response body by the size reported in Content-Length header of the HEAD task.
This relies on node-fetch's way of handling it. I don't know the magic behind it.

controllers/uploadController.js

@@ -261,7 +261,9 @@ uploadsController.actuallyUploadByUrl = async (req, res, user, albumid) => {
         return erred('File too large.')
       }
 
-      const fetchFile = await fetch(url)
+      const fetchFile = await fetch(url, {
+        size // limit max response body size with content-length
+      })
       if (fetchFile.status !== 200) {
         return erred(`${fetchHead.status} ${fetchHead.statusText}`)
       }