Add test of invalid __halt_compiler without args

All properties should be MissingTokens and non-null

Author: TysonAndre

tests/cases/parser/haltCompiler8.php

@@ -0,0 +1,2 @@
+<?php
+__halt_compiler

tests/cases/parser/haltCompiler8.php.diag

@@ -0,0 +1,20 @@
+[
+    {
+        "kind": 0,
+        "message": "'(' expected.",
+        "start": 21,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "')' expected.",
+        "start": 21,
+        "length": 0
+    },
+    {
+        "kind": 0,
+        "message": "';' expected.",
+        "start": 21,
+        "length": 0
+    }
+]

tests/cases/parser/haltCompiler8.php.tree

@@ -0,0 +1,44 @@
+{
+    "SourceFileNode": {
+        "statementList": [
+            {
+                "InlineHtml": {
+                    "scriptSectionEndTag": null,
+                    "text": null,
+                    "scriptSectionStartTag": {
+                        "kind": "ScriptSectionStartTag",
+                        "textLength": 6
+                    }
+                }
+            },
+            {
+                "HaltCompilerStatement": {
+                    "haltCompilerKeyword": {
+                        "kind": "HaltCompilerKeyword",
+                        "textLength": 15
+                    },
+                    "openParen": {
+                        "error": "MissingToken",
+                        "kind": "OpenParenToken",
+                        "textLength": 0
+                    },
+                    "closeParen": {
+                        "error": "MissingToken",
+                        "kind": "CloseParenToken",
+                        "textLength": 0
+                    },
+                    "semicolonOrCloseTag": {
+                        "error": "MissingToken",
+                        "kind": "SemicolonToken",
+                        "textLength": 0
+                    },
+                    "data": null
+                }
+            }
+        ],
+        "endOfFileToken": {
+            "kind": "EndOfFileToken",
+            "textLength": 0
+        }
+    }
+}