Remove empty argument lists from do expressions

src/test/compile-fail/borrowck-assign-comp-idx.rs

@@ -17,7 +17,7 @@ fn b() {
 
     let mut p = ~[mut 1];
 
-    do borrow(p) || { //~ NOTE loan of mutable vec content granted here
+    do borrow(p) { //~ NOTE loan of mutable vec content granted here
         p[0] = 5; //~ ERROR assigning to mutable vec content prohibited due to outstanding loan
     }
 }

src/test/compile-fail/borrowck-lend-flow.rs

@@ -76,7 +76,7 @@ fn at_most_once_block() {
 
     let mut v = ~3, w = ~4;
     let mut _x = &mut w;
-    do at_most_once || {
+    do at_most_once {
         borrow(v); //~ ERROR loan of mutable variable declared in an outer block as immutable conflicts with prior loan
         _x = &mut v; //~ NOTE prior loan as mutable granted here
     }

src/test/compile-fail/borrowck-loan-rcvr.rs

@@ -19,7 +19,7 @@ fn a() {
     p.impurem();
 
     // But in this case we do not honor the loan:
-    do p.blockm || { //~ NOTE loan of mutable local variable granted here
+    do p.blockm { //~ NOTE loan of mutable local variable granted here
         p.x = 10; //~ ERROR assigning to mutable field prohibited due to outstanding loan
     }
 }

src/test/compile-fail/borrowck-loan-vec-content.rs

@@ -8,13 +8,13 @@ fn takes_imm_elt(_v: &int, f: fn()) {
 
 fn has_mut_vec_and_does_not_try_to_change_it() {
     let v = ~[mut 1, 2, 3];
-    do takes_imm_elt(&v[0]) || {
+    do takes_imm_elt(&v[0]) {
     }
 }
 
 fn has_mut_vec_but_tries_to_change_it() {
     let v = ~[mut 1, 2, 3];
-    do takes_imm_elt(&v[0]) || { //~ NOTE loan of mutable vec content granted here
+    do takes_imm_elt(&v[0]) { //~ NOTE loan of mutable vec content granted here
         v[1] = 4; //~ ERROR assigning to mutable vec content prohibited due to outstanding loan
     }
 }
@@ -25,7 +25,7 @@ fn takes_const_elt(_v: &const int, f: fn()) {
 
 fn has_mut_vec_and_tries_to_change_it() {
     let v = ~[mut 1, 2, 3];
-    do takes_const_elt(&const v[0]) || {
+    do takes_const_elt(&const v[0]) {
         v[1] = 4;
     }
 }

src/test/compile-fail/issue-2487-b.rs

@@ -6,7 +6,7 @@ class socket {
     drop { }
 
     fn set_identity()  {
-        do closure || {
+        do closure {
         setsockopt_bytes(self.sock) //~ ERROR copying a noncopyable value
       } 
     }

src/test/compile-fail/kindck-implicit-close-over-mut-var.rs

@@ -3,7 +3,7 @@ fn use(_i: int) {}
 fn foo() {
     // Here, i is *moved* into the closure: Not actually OK
     let mut i = 0;
-    do task::spawn || {
+    do task::spawn {
         use(i); //~ ERROR mutable variables cannot be implicitly captured
     }
 }
@@ -13,7 +13,7 @@ fn bar() {
     // is mutable: bad
     let mut i = 0;
     while i < 10 {
-        do task::spawn || {
+        do task::spawn {
             use(i); //~ ERROR mutable variables cannot be implicitly captured
         }
         i += 1;

src/test/compile-fail/no-capture-arc.rs

@@ -6,7 +6,7 @@ fn main() {
     let v = ~[1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
     let arc_v = arc::arc(v);
     
-    do task::spawn() || {
+    do task::spawn() {
         let v = *arc::get(&arc_v);
         assert v[3] == 4;
     };