"OSError: Syntac Error" when file not found

[jacksbox]

A minor issue, but one that took me some time to figure out.
polib raises an Exception if the specified file is not found - which makes sense.
But it does not throw a NotFound (or similar) error, instead it throws

...
OSError: Syntax error in po file (line 1)

which is kind of misleading: There is no syntax error in the file... the file is just not there.
I think the error message (and the error) should be more telling in this case.

[kthy]

Duplicate of #134

[izimobil]

Thank you @kthy