Accidentally lowered object performance.

Author: maciejhirsz

src/parser.rs

@@ -710,7 +710,7 @@ impl<'a> Parser<'a> {
     // Given how compilcated reading numbers and strings is, reading objects
     // is actually pretty simple.
     fn read_object(&mut self) -> Result<Object> {
-        let mut object = Object::with_capacity(2);
+        let mut object = Object::with_capacity(3);
 
         let key = expect!{ self,
             b'}'  => return Ok(object),
@@ -742,7 +742,7 @@ impl<'a> Parser<'a> {
     fn read_array(&mut self) -> Result<Vec<JsonValue>> {
         let first = expect_value!{ self, b']' => return Ok(Vec::new()) };
 
-        let mut array = Vec::with_capacity(3);
+        let mut array = Vec::with_capacity(2);
         array.push(first);
 
         loop {