IndexOutOfRangeException for short files

[KvanTTT]

I create simple 1.txt file with simple short content: "1" and got the System.IndexOutOfRangeException.

[pavogel]

At the time of this comment, I am able to run a 1 byte txt file through without exception (so this appears to be fixed?).

I do receive an ArgumentOutOfRangeException when MimeDetective.MimeTypes.GetFileMatchingCount fails due to tiny file size for png and gif (apparently they must be larger than 512 bytes).

Not a show stopper because I don't think anyone will ever upload an image that is smaller than 1 kb.

[Meyhem]

Also getting Index out of range for 8-bit 50x100 png of size 457 bytes (small icon). Larger dimensions are working just fine.
Image that throws error

Same type larger image no error

Exception details