Remove the rest_parameter(int*) variant, use rest_parameter() instead.

src/ast/ast-numbering.cc

Index: src/ast/ast-numbering.cc
diff --git a/src/ast/ast-numbering.cc b/src/ast/ast-numbering.cc
index 1b9905a2c6c1d0d23076e965f2983a0d4f6b07d6..f891bd72366eef075df45dfbc2f02eff0e5cb5ce 100644
--- a/src/ast/ast-numbering.cc
+++ b/src/ast/ast-numbering.cc
@@ -575,8 +575,7 @@ bool AstNumberingVisitor::Renumber(FunctionLiteral* node) {
     DisableCrankshaft(kContextAllocatedArguments);
   }
 
-  int rest_index;
-  if (scope->rest_parameter(&rest_index)) {
+  if (scope->rest_parameter() != nullptr) {
     DisableCrankshaft(kRestParameter);
   }