Fixes #3111. Update expected errors positions (#3113)

Fixes #3111. Update positions of expected errors

Author: sgrekhov

Language/Expressions/Maps/syntax_t08.dart

@@ -12,21 +12,16 @@
 /// ;
 /// A map literal consists of zero or more entries. Each entry has a key and a
 /// value. Each key and each value is denoted by an expression.
+///
 /// @description Checks that it is a compile-time error if a map literal
 /// does not end with '}'.
 /// @author msyabro
 
-
 main() {
-//     ^
-// [cfe] unspecified
-  var x = {"key1": true, "key2":false;
-//                                   ^
+  var x = {"key1": true, "key2": false;
+//                                    ^
 // [analyzer] unspecified
 // [cfe] unspecified
-}
-//^
+/**/}
+//  ^
 // [analyzer] unspecified
-// [cfe] unspecified
-// [error line 32, column 0]
-// [analyzer] unspecified

Language/Statements/Switch/syntax_t08.dart

@@ -17,18 +17,17 @@
 /// bracket of the switch statement's body is missing.
 /// @author vasya
 
-
 switchTest(value) {
-//                ^
-// [cfe] unspecified
   var result;
 
   switch (value) {
+//               ^
+// [cfe] unspecified
     case 0: result = 0; break;
     default: result = -1;
   return result;
-}
+/**/}
+//  ^
+// [analyzer] unspecified
 
 main() {}
-// [error line 34, column 0]
-// [analyzer] unspecified

Language/Statements/Try/syntax_t04.dart

@@ -22,14 +22,12 @@
 ///    implicitly) the type of exception object to be handled, one or two
 ///    exception parameters and a block statement.
 /// 2. A finally clause, which consists of a block statement.
+///
 /// @description Checks that it is a compile-time error if the try block is
 /// missing the closing curly braces.
 /// @author vasya
 
-
 main() {
-//     ^
-// [cfe] unspecified
   try {
 //^
 // [analyzer] unspecified
@@ -39,6 +37,6 @@ main() {
 //         ^
 // [analyzer] unspecified
 // [cfe] unspecified
-}
-// [error line 44, column 0]
-// [analyzer] unspecified
+/**/}
+//  ^
+// [analyzer] unspecified