[SyntaxParse] Don't update PreviousLoc when ignoring token.

So that the last token in Syntax and PreviousLoc match.

Author: rintaro

lib/Parse/Parser.cpp

@@ -755,6 +755,7 @@ void Parser::skipSingle() {
 }
 
 void Parser::ignoreToken() {
+  assert(!Tok.is(tok::eof) && "Lexing eof token");
   ParsedTriviaList Skipped;
   Skipped.reserve(LeadingTrivia.size() + TrailingTrivia.size() + 1 + 2);
   std::move(LeadingTrivia.begin(), LeadingTrivia.end(),
@@ -764,7 +765,7 @@ void Parser::ignoreToken() {
             std::back_inserter(Skipped));
 
   TokReceiver->receive(Tok);
-  consumeTokenWithoutFeedingReceiver();
+  L->lex(Tok, LeadingTrivia, TrailingTrivia);
 
   std::move(LeadingTrivia.begin(), LeadingTrivia.end(),
             std::back_inserter(Skipped));

test/Parse/recovery.swift

@@ -511,7 +511,7 @@ struct ErrorInFunctionSignatureResultArrayType5 {
 
 
 struct ErrorInFunctionSignatureResultArrayType11 { // expected-note{{in declaration of 'ErrorInFunctionSignatureResultArrayType11'}}
-  func foo() -> Int[(a){a++}] { // expected-error {{consecutive declarations on a line must be separated by ';'}} {{21-21=;}} expected-error {{expected ']' in array type}} expected-note {{to match this opening '['}} expected-error {{expected '{' in body of function declaration}} expected-error {{expected declaration}}
+  func foo() -> Int[(a){a++}] { // expected-error {{consecutive declarations on a line must be separated by ';'}} {{20-20=;}} expected-error {{expected ']' in array type}} expected-note {{to match this opening '['}} expected-error {{expected '{' in body of function declaration}} expected-error {{expected declaration}}
   }
 }