Tweak span for ok-wrapping in no-tail block

Author: scottmcm

src/librustc/hir/lowering.rs

@@ -3017,9 +3017,10 @@ impl<'a> LoweringContext<'a> {
                     let tail = block.expr.take().map_or_else(
                         || {
                             let LoweredNodeId { node_id, hir_id } = this.next_id();
+                            let span = this.sess.codemap().end_point(unstable_span);
                             hir::Expr {
                                 id: node_id,
-                                span: unstable_span,
+                                span,
                                 node: hir::ExprTup(hir_vec![]),
                                 attrs: ThinVec::new(),
                                 hir_id,

src/test/ui/catch-block-type-error.rs

@@ -20,7 +20,7 @@ fn main() {
     };
 
     let _: Option<i32> = do catch {
-        //~^ ERROR type mismatch
         foo()?;
     };
+    //~^ ERROR type mismatch
 }

src/test/ui/catch-block-type-error.stderr

@@ -8,14 +8,10 @@ LL |         42
               found type `{integer}`
 
 error[E0271]: type mismatch resolving `<std::option::Option<i32> as std::ops::Try>::Ok == ()`
-  --> $DIR/catch-block-type-error.rs:22:35
+  --> $DIR/catch-block-type-error.rs:24:5
    |
-LL |       let _: Option<i32> = do catch {
-   |  ___________________________________^
-LL | |         //~^ ERROR type mismatch
-LL | |         foo()?;
-LL | |     };
-   | |_____^ expected i32, found ()
+LL |     };
+   |     ^ expected i32, found ()
    |
    = note: expected type `i32`
               found type `()`