vec: use field init shorthand notation

src/vec/vec-drain.md

@@ -93,7 +93,7 @@ impl<T> IntoIterator for Vec<T> {
             mem::forget(self);
 
             IntoIter {
-                iter: iter,
+                iter,
                 _buf: buf,
             }
         }
@@ -144,7 +144,7 @@ impl<T> Vec<T> {
             self.len = 0;
 
             Drain {
-                iter: iter,
+                iter,
                 vec: PhantomData,
             }
         }

src/vec/vec-final.md

@@ -166,7 +166,7 @@ impl<T> Vec<T> {
             self.len = 0;
 
             Drain {
-                iter: iter,
+                iter,
                 vec: PhantomData,
             }
         }
@@ -203,7 +203,7 @@ impl<T> IntoIterator for Vec<T> {
             mem::forget(self);
 
             IntoIter {
-                iter: iter,
+                iter,
                 _buf: buf,
             }
         }

src/vec/vec-into-iter.md

@@ -71,7 +71,7 @@ impl<T> IntoIterator for Vec<T> {
         unsafe {
             IntoIter {
                 buf: ptr,
-                cap: cap,
+                cap,
                 start: ptr.as_ptr(),
                 end: if cap == 0 {
                     // can't offset off this pointer, it's not allocated!