Update src/uu/sort/src/sort.rs

Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>

Author: mattsu2020

src/uu/sort/src/sort.rs

@@ -1846,13 +1846,13 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         uucore::clap_localization::handle_clap_result_with_exit_code(uu_app(), processed_args, 2)?;
 
     // Prevent -o/--output to be specified multiple times
-    if let Some(outputs) = matches.get_many::<OsString>(options::OUTPUT) {
-        let mut iter = outputs.into_iter();
-        if let Some(first) = iter.next() {
-            if iter.any(|out| out != first) {
-                return Err(SortError::MultipleOutputFiles.into());
-            }
-        }
+    if let Some(mut outputs) = matches.get_many::<OsString>(options::OUTPUT) {
+       if let Some(first) = outputs.next() {
+           if outputs.any(|out| out != first) {
+               return Err(SortError::MultipleOutputFiles.into());
+           }
+       }
+   }
     }
 
     settings.debug = matches.get_flag(options::DEBUG);