Rollup merge of #69621 - matthiaskrgr:q, r=petrochenkov

use question mark operator in a few places.

1 files changed, 2 insertions, 6 deletions

diff --git a/src/libcore/iter/adapters/mod.rs b/src/libcore/iter/adapters/mod.rs
index 58606531a1a..02dc9b8f82e 100644
--- a/src/libcore/iter/adapters/mod.rs
+++ b/src/libcore/iter/adapters/mod.rs
@@ -1894,9 +1894,7 @@ where
             let to_skip = self.n;
             self.n = 0;
             // nth(n) skips n+1
-            if self.iter.nth(to_skip - 1).is_none() {
-                return None;
-            }
+            self.iter.nth(to_skip - 1)?;
         }
         self.iter.nth(n)
     }
@@ -1916,9 +1914,7 @@ where
     fn last(mut self) -> Option<I::Item> {
         if self.n > 0 {
             // nth(n) skips n+1
-            if self.iter.nth(self.n - 1).is_none() {
-                return None;
-            }
+            self.iter.nth(self.n - 1)?;
         }
         self.iter.last()
     }