Fix compiler panic with a large number of threads - address comment

Author: practicalrs

compiler/rustc_session/src/options.rs

@@ -665,11 +665,7 @@ mod parse {
             Some(i) => {
                 // We want to cap the number of threads here to avoid large numbers like 999999 and compiler panics.
                 // This solution was suggested here https://github.com/rust-lang/rust/issues/117638#issuecomment-1800925067
-                if i <= 256 {
-                    *slot = i;
-                } else {
-                    *slot = 256;
-                }
+                *slot = i.min(256);
                 true
             }
             None => false,