Make TestJSArrayForAllocationMemento less awkward.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 1c8bbbe28d05654e4d39de8d664e1d5fa17b9998..b95ac3a25232974e96b03763a452e75356d1c54b 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -4257,8 +4257,10 @@ void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
 void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) {
   Register object = ToRegister(instr->object());
   Register temp = ToRegister(instr->temp());
-  __ TestJSArrayForAllocationMemento(object, temp);
+  Label no_memento_found;
+  __ TestJSArrayForAllocationMemento(object, temp, &no_memento_found);
   DeoptimizeIf(equal, instr->environment());
+  __ bind(&no_memento_found);
 }