serialize: add missing Encodable impl for Path.

Author: eddyb

src/libserialize/serialize.rs

@@ -764,12 +764,18 @@ macro_rules! tuple {
 
 tuple! { T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, }
 
-impl Encodable for path::PathBuf {
+impl Encodable for path::Path {
     fn encode<S: Encoder>(&self, e: &mut S) -> Result<(), S::Error> {
         self.to_str().unwrap().encode(e)
     }
 }
 
+impl Encodable for path::PathBuf {
+    fn encode<S: Encoder>(&self, e: &mut S) -> Result<(), S::Error> {
+        path::Path::encode(self, e)
+    }
+}
+
 impl Decodable for path::PathBuf {
     fn decode<D: Decoder>(d: &mut D) -> Result<path::PathBuf, D::Error> {
         let bytes: String = Decodable::decode(d)?;