PreParsing inner funcs: make scope analysis even more complete.

src/parsing/preparser.h

Index: src/parsing/preparser.h
diff --git a/src/parsing/preparser.h b/src/parsing/preparser.h
index 037c2d0376b6580bee226958db9117b94e2b30e9..1f822a46c3591e7b6922adf095ac8433b4dcf4ab 100644
--- a/src/parsing/preparser.h
+++ b/src/parsing/preparser.h
@@ -1271,6 +1271,11 @@ class PreParser : public ParserBase<PreParser> {
   V8_INLINE PreParserStatement
   BuildInitializationBlock(DeclarationParsingResult* parsing_result,
                            ZoneList<const AstRawString*>* names, bool* ok) {
+    for (auto declaration : parsing_result->declarations) {
+      DeclareAndInitializeVariables(PreParserStatement::Default(),
+                                    &(parsing_result->descriptor), &declaration,
+                                    names, ok);
+    }
     return PreParserStatement::Default();
   }