Chore: fixed tests for new function property

Author: flying-sheep

tests/fixtures/attach-comments/export-default-anonymous-class.result.js

@@ -56,6 +56,7 @@ module.exports = {
                                 },
                                 "generator": false,
                                 "expression": false,
+                                "async": false,
                                 "range": [
                                     110,
                                     119

tests/fixtures/attach-comments/surrounding-call-comments.result.js

@@ -123,6 +123,7 @@ module.exports = {
                 ]
             },
             "expression": false,
+            "async": false,
             "generator": false
         }
     ],

tests/fixtures/attach-comments/surrounding-debugger-comments.result.js

@@ -87,6 +87,7 @@ module.exports = {
                 ]
             },
             "expression": false,
+            "async": false,
             "generator": false
         }
     ],

tests/fixtures/attach-comments/surrounding-return-comments.result.js

@@ -88,6 +88,7 @@ module.exports = {
                 ]
             },
             "expression": false,
+            "async": false,
             "generator": false
         }
     ],

tests/fixtures/attach-comments/surrounding-throw-comments.result.js

@@ -106,6 +106,7 @@ module.exports = {
                 ]
             },
             "expression": false,
+            "async": false,
             "generator": false
         }
     ],

tests/fixtures/attach-comments/surrounding-while-loop-comments.result.js

@@ -51,6 +51,7 @@ module.exports = {
             },
             "generator": false,
             "expression": false,
+            "async": false,
             "params": [],
             "body": {
                 "type": "BlockStatement",

tests/fixtures/attach-comments/switch-fallthrough-comment-in-function.result.js

@@ -254,6 +254,7 @@ module.exports = {
                 ]
             },
             "expression": false,
+            "async": false,
             "generator": false
         }
     ],

tests/fixtures/attach-comments/switch-no-default-comment-in-function.result.js

@@ -238,6 +238,7 @@ module.exports = {
                 ]
             },
             "expression": false,
+            "async": false,
             "generator": false
         }
     ],

tests/fixtures/attach-comments/switch-no-default-comment-in-nested-functions.result.js

@@ -630,11 +630,13 @@ module.exports = {
                                     ]
                                 },
                                 "expression": false,
+                                "async": false,
                                 "generator": false
                             }
                         ]
                     },
                     "expression": false,
+                    "async": false,
                     "generator": false
                 }
             }

tests/fixtures/basics/new-without-parens.result.js

@@ -51,6 +51,7 @@ module.exports = {
             },
             "generator": false,
             "expression": false,
+            "async": false,
             "params": [],
             "body": {
                 "type": "BlockStatement",