auto merge of #6487 : recrack/rust/vec_len, r=thestinger

Rename vec::len(var) to var.len()

```
libcore, libfuzzer, librustc, librustdoc, libstd, libsyntax
test/auxiliary
test/bench
test/run-pass
```

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index 20bf01c0dc1..30470d2ebe7 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -351,7 +351,7 @@ pub fn expr_to_ident(cx: @ext_ctxt,
                      err_msg: &str) -> ast::ident {
     match expr.node {
       ast::expr_path(p) => {
-        if vec::len(p.types) > 0u || vec::len(p.idents) != 1u {
+        if p.types.len() > 0u || p.idents.len() != 1u {
             cx.span_fatal(expr.span, err_msg);
         }
         return p.idents[0];