Probe: Actually return errors instead of logging them

[MeFisto94]

So, the title is a bit hard to get, but I stumbled over the following problem:

Symphonia/symphonia-core/src/probe.rs

Line 299 in 4f41954

error!("probe reach EOF at {} bytes.", count);

Essentially, my stream wasn't ready to be read, but this code actually "ignores" the actual error (well, it's sent to a logger, which I didn't see), and returns a more generic error, that makes you believe that the detection failed or you are missing parsers.
After all, however, it was rather an IO error.

So, my suggestions would be to return a more specific error in the if clause instead.