Uploading 0kb jpg fails

[ReinerNippes]

Upload a 0kb (empty) jpg to NC 15.0.2 fails.

{"reqId":"vo3IvVGJQriT4qQZHj6s","level":3,"time":"2019-01-14T22:49:11+00:00","remoteAddr":"xxxxx","user":"yyyy","app":"PHP","method":"PUT","url":"/remote.php/webdav/Share/Leeres%20Bild.jpg","message":"feof(): supplied resource is not a valid stream resource at /var/www/html/apps/dav/lib/Connector/Sabre/File.php#172","userAgent":"Go-http-client/1.1","version":"15.0.2.0"}

[kesselb]

Thank you for reporting this issue 👍

Duplicate of #13276
Fix in #13468 (should be released with 15.0.3 currently planned for 2019-02-21)