A64: Force emission of the veneer pool emission when required.

src/a64/macro-assembler-a64-inl.h

Index: src/a64/macro-assembler-a64-inl.h
diff --git a/src/a64/macro-assembler-a64-inl.h b/src/a64/macro-assembler-a64-inl.h
index 18d1d0d2c44efd585ca6c7c7c987a93d3b1f4161..0dbab71716d25de5cdd60580fa379801d593932c 100644
--- a/src/a64/macro-assembler-a64-inl.h
+++ b/src/a64/macro-assembler-a64-inl.h
@@ -346,7 +346,7 @@ void MacroAssembler::Asr(const Register& rd,
 
 void MacroAssembler::B(Label* label) {
   b(label);
-  CheckVeneerPool(false);
+  CheckVeneerPool(false, false);
 }
 
 
@@ -1036,7 +1036,7 @@ void MacroAssembler::Ret(const Register& xn) {
   ASSERT(allow_macro_instructions_);
   ASSERT(!xn.IsZero());
   ret(xn);
-  CheckVeneerPool(false);
+  CheckVeneerPool(false, false);
 }