[parser] Simplify ExpectSemicolon

Change-Id: I1551da2cbd5cbd6e0cdf86837a01c84217a648b6
Reviewed-on: https://chromium-review.googlesource.com/1190783Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55433}

src/parsing/parser-base.h

@@ -752,22 +752,14 @@ class ParserBase {
       return;
     }
 
-    Token::Value current = scanner()->current_token();
-    Scanner::Location current_location = scanner()->location();
-    Token::Value next = Next();
-
-    if (next == Token::SEMICOLON) {
-      return;
-    }
-
     *ok = false;
-    if (current == Token::AWAIT && !is_async_function()) {
-      ReportMessageAt(current_location,
+    if (scanner()->current_token() == Token::AWAIT && !is_async_function()) {
+      ReportMessageAt(scanner()->location(),
                       MessageTemplate::kAwaitNotInAsyncFunction, kSyntaxError);
       return;
     }
 
-    ReportUnexpectedToken(next);
+    ReportUnexpectedToken(Next());
   }
 
   // Dummy functions, just useful as arguments to CHECK_OK_CUSTOM.