[async-functions] support await expressions in finally statements

src/ast/prettyprinter.cc

Index: src/ast/prettyprinter.cc
diff --git a/src/ast/prettyprinter.cc b/src/ast/prettyprinter.cc
index 950596722a842f40f23f2a8e941aed611d43c894..7dffa45585f89834320e46b2c86b891fa9a327db 100644
--- a/src/ast/prettyprinter.cc
+++ b/src/ast/prettyprinter.cc
@@ -377,6 +377,11 @@ void CallPrinter::VisitGetIterator(GetIterator* node) {
   Print(")");
 }
 
+void CallPrinter::VisitInternalVariable(InternalVariable* node) {
+  const char* name = node->name();
+  Print(name);
+}
+
 void CallPrinter::VisitThisFunction(ThisFunction* node) {}
 
 
@@ -1203,6 +1208,10 @@ void AstPrinter::VisitGetIterator(GetIterator* node) {
   Visit(node->iterable());
 }
 
+void AstPrinter::VisitInternalVariable(InternalVariable* node) {
+  Print("%s", node->name());
+}
+
 void AstPrinter::VisitThisFunction(ThisFunction* node) {
   IndentedScope indent(this, "THIS-FUNCTION", node->position());
 }