add ui test for fn items, tidy fixes

Author: gaurikholkar

src/librustc/infer/error_reporting/different_lifetimes.rs

@@ -210,7 +210,7 @@ impl<'a, 'gcx, 'tcx> Visitor<'gcx> for FindNestedTypeVisitor<'a, 'gcx, 'tcx> {
                 self.depth -= 1;
                 return;
             }
-            
+
             hir::TyRptr(ref lifetime, _) => {
                 // the lifetime of the TyRptr
                 let hir_id = self.infcx.tcx.hir.node_to_hir_id(lifetime.id);

src/test/ui/lifetime-errors/ex3-both-anon-regions-one-is-struct-3.rs

@@ -11,11 +11,7 @@
 struct Ref<'a, 'b> { a: &'a u32, b: &'b u32 }
 
 fn foo(mut y: Ref, x: &u32) {
-<<<<<<< HEAD
     y.b = x;
-=======
-    x = y.b;
->>>>>>> Adding E0623 for structs
 }
 
 fn main() { }

src/test/ui/lifetime-errors/ex3-both-anon-regions-using-fn-items.rs

@@ -0,0 +1,14 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+fn foo(x:fn(&u8, &u8), y: Vec<&u8>, z: &u8) {
+  y.push(z);
+}
+
+fn main() { }

src/test/ui/lifetime-errors/ex3-both-anon-regions-using-fn-items.stderr

@@ -0,0 +1,10 @@
+error[E0623]: lifetime mismatch
+  --> src/test/ui/lifetime-errors/ex3-both-anon-regions-using-fn-items.rs:11:10
+   |
+10 | fn foo(x:fn(&u8, &u8), y: Vec<&u8>, z: &u8) {
+   |                               ---      --- these two types are declared with different lifetimes...
+11 |   y.push(z);
+   |          ^ ...but data from `z` flows into `y` here
+
+error: aborting due to previous error
+