Non-async impl of fmt::Write for terminal mode incorrectly only displays final character of string

[JarrettBillingsley]

ssd1306/src/mode/terminal.rs

Line 627 in 27d63b4

s.chars().map(move |c| self.print_char(c)).next_back();

This line of code uses .next_back(), which only prints the final character of the string.

Earlier revisions apparently used .last() which would evaluate the whole iterator. (I can confirm that changing it back to .last() works.)