Incorporate review comments (mostly fixing indentation)

Previous commit was r=nmatsakis

src/rustc/middle/liveness.rs

@@ -596,7 +596,7 @@ struct Liveness {
     users: ~[mut users],
     // The list of node IDs for the nested loop scopes
     // we're in.
-    mut loop_scope: @DVec<node_id>,
+    loop_scope: DVec<node_id>,
     // mappings from loop node ID to LiveNode
     // ("break" label should map to loop node ID,
     // it probably doesn't now)

src/rustc/middle/trans/controlflow.rs

@@ -113,7 +113,6 @@ fn trans_while(bcx: block, cond: @ast::expr, body: ast::blk)
     //    |           body_bcx_out --+
     // next_bcx
 
-    // tjc: while should have labels...
     let loop_bcx = loop_scope_block(bcx, next_bcx, None, ~"`while`",
                                     body.info());
     let cond_bcx_in = scope_block(loop_bcx, cond.info(), ~"while loop cond");

src/rustc/middle/typeck/check.rs

@@ -2564,8 +2564,7 @@ fn may_break(cx: ty::ctxt, id: ast::node_id, b: ast::blk) -> bool {
                     _ => false,
                 },
             _ => false
-       }
-   }))
+        }}))
 }
 
 fn check_bounds_are_used(ccx: @crate_ctxt,