for good measure, use unsigned_abs() for a variant that can't panic.

Otherwise `N::MIN` can't be turned unto that same type abs version, but
it can fit into its unsiged version of the type.

Author: Byron

gix-date/src/time/write.rs

@@ -23,8 +23,8 @@ impl Time {
 
         const ZERO: &[u8; 1] = b"0";
 
-        const SECONDS_PER_HOUR: i32 = 60 * 60;
-        let offset = self.offset.abs();
+        const SECONDS_PER_HOUR: u32 = 60 * 60;
+        let offset = self.offset.unsigned_abs();
         let hours = offset / SECONDS_PER_HOUR;
         assert!(hours < 25, "offset is more than a day: {hours}");
         let minutes = (offset - (hours * SECONDS_PER_HOUR)) / 60;