Update wire.rs

Author: chris-ha458

regex-automata/src/util/wire.rs

@@ -482,12 +482,8 @@ pub(crate) fn write_label(
 /// is longer than 255 bytes. (The size restriction exists so that searching
 /// for a label during deserialization can be done in small bounded space.)
 pub(crate) fn write_label_len(label: &str) -> usize {
-    if label.len() > 255 {
-        panic!("label must not be longer than 255 bytes");
-    }
-    if label.as_bytes().iter().position(|&b| b == 0).is_some() {
-        panic!("label must not contain NUL bytes");
-    }
+    assert!(label.len() <= 255, "label must not be longer than 255 bytes");
+    assert!(label.bytes().all(|b| b != 0), "label must not contain NUL bytes");
     let label_len = label.len() + 1; // +1 for the NUL terminator
     label_len + padding_len(label_len)
 }