Scan fails when using double newlines

[Jonathan-Greve]

Hi loving the library!

I have a minor issue with scanning some strings.

This doesn't scan succesfully:
auto scan_result = scn::scan<int>("0\n\n", "{}\n\n");

similarly these won't either:
auto scan_result = scn::scan<int>("0\n\r", "{}\n\r");
auto scan_result = scn::scan<int>("0\r\n", "{}\r\n");
auto scan_result = scn::scan<int>("0\r\r", "{}\r\r");

These will scan succesfully:
auto scan_result = scn::scan<int>("0\r\r", "{}");
auto scan_result = scn::scan<int>("0\r\r", "{}\0\n"); (I also don't understand why this is successful since "\r\r" != "\0\n"

Reproduced here:
https://godbolt.org/z/YY6K7Tzch

The results error message is: "Unexpected end of source"

Could you please offer some insight on what is happening here?

[eliaskosunen]

This is a bug, fixed in 58ae085. Thanks for reporting!