Fix filename in export error message
commit5c621d32820a7c3a2e28bc7dfc53e4eed9db82da
authorOlly Betts <olly@survex.com>
Sun, 2 Oct 2016 05:32:40 +0000 (2 18:32 +1300)
committerOlly Betts <olly@survex.com>
Sun, 2 Oct 2016 05:36:20 +0000 (2 18:36 +1300)
tree38f8918363d2daf44ad50fa9a6829ca3c337cc8c
parenta452f58049473fb4f1f70094ac4f1bdc7ce346c0
Fix filename in export error message

If the file could not be written, we were reporting the error with
the .3d filename, not the filename we were trying to write to.
src/printing.cc