Remove duplicated code from comma-separated Expression parsing

test/mjsunit/es8/syntactic-tail-call-parsing-sloppy.js

Index: test/mjsunit/es8/syntactic-tail-call-parsing-sloppy.js
diff --git a/test/mjsunit/es8/syntactic-tail-call-parsing-sloppy.js b/test/mjsunit/es8/syntactic-tail-call-parsing-sloppy.js
index d02608606d0267df52ce860388b7c5b7420863ee..100171d17bb728745ad4555b575670e2b13c1220 100644
--- a/test/mjsunit/es8/syntactic-tail-call-parsing-sloppy.js
+++ b/test/mjsunit/es8/syntactic-tail-call-parsing-sloppy.js
@@ -142,12 +142,6 @@ var SyntaxErrorTests = [
       { src: `()=>{ (1, 2, 3, continue f() ) => {} }`,
         err: `                ^^^^^^^^^^^^`,
       },
-      { src: `()=>{ (... continue f()) => {}  }`,
-        err: `           ^^^^^^^^^^^^`,
-      },
-      { src: `()=>{ (a, b, c, ... continue f() ) => {}  }`,
-        err: `                    ^^^^^^^^^^^^`,
-      },
       { src: `()=>{ return a <= continue f(); }`,
         err: `                  ^^^^^^^^^^^^`,
       },
@@ -333,6 +327,16 @@ var SyntaxErrorTests = [
       },
     ],
   },
+  { msg: "Unexpected token continue",
+    tests: [
+      { src: `()=>{ (... continue f()) => {}  }`,
+        err: `           ^^^^^^^^`,
+      },
+      { src: `()=>{ (a, b, c, ... continue f() ) => {}  }`,
+        err: `                    ^^^^^^^^`,
+      },
+    ],
+  },
   { msg: "Undefined label 'foo'",
     tests: [
       { src: `()=>{ continue  foo () ; }`,