bindings: rust: clippy: silence false-positive on iterator

This was fixed on clippy master [1], but it is still broken on 0.1.70. So
lets silence it until the clippy fix is widely available.

clippy version: clippy 0.1.70 (90c5418 2023-05-31).

[1] 9fa4089410

Reported-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20230612154055.56556-1-warthog618@gmail.com
Signed-off-by: Erik Schilling <erik.schilling@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

bindings/rust/libgpiod/src/event_buffer.rs

@@ -54,6 +54,9 @@ impl<'a> Iterator for Events<'a> {
     }
 
     fn next(&mut self) -> Option<Self::Item> {
+        // clippy false-positive, fixed in next clippy release:
+        // https://github.com/rust-lang/rust-clippy/issues/9820
+        #[allow(clippy::iter_nth_zero)]
         self.nth(0)
     }
 }