PPC/s390: modify if/else block to fix debug build

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 8712fff3b9896e8bb44bbc5d054c03ba37066121..db8fefd57904179b276fb2105bbea7a8e641dad8 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -285,7 +285,7 @@ PreParser::Statement PreParser::ParseScopedStatement(bool legacy, bool* ok) {
   } else {
     Scope* body_scope = NewScope(scope_, BLOCK_SCOPE);
     BlockState block_state(&scope_, body_scope);
-    return ParseFunctionDeclaration(CHECK_OK);
+    return ParseFunctionDeclaration(ok);
   }
 }