Mark `FixedOffset::{local_minus_utc, utc_minus_local}` as `#[inline]`.

src/offset/fixed.rs

@@ -86,11 +86,13 @@ impl FixedOffset {
     }
 
     /// Returns the number of seconds to add to convert from UTC to the local time.
+    #[inline]
     pub fn local_minus_utc(&self) -> i32 {
         self.local_minus_utc
     }
 
     /// Returns the number of seconds to add to convert from the local time to UTC.
+    #[inline]
     pub fn utc_minus_local(&self) -> i32 {
         -self.local_minus_utc
     }