Auto merge of #28375 - tbu-:pr_sip_write, r=alexcrichton

Author: bors

src/libcore/hash/sip.rs

@@ -138,7 +138,10 @@ impl SipHasher {
         self.v3 = self.k1 ^ 0x7465646279746573;
         self.ntail = 0;
     }
+}
 
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Hasher for SipHasher {
     #[inline]
     fn write(&mut self, msg: &[u8]) {
         let length = msg.len();
@@ -183,14 +186,6 @@ impl SipHasher {
         self.tail = u8to64_le!(msg, i, left);
         self.ntail = left;
     }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl Hasher for SipHasher {
-    #[inline]
-    fn write(&mut self, msg: &[u8]) {
-        self.write(msg)
-    }
 
     #[inline]
     fn finish(&self) -> u64 {