Unify internal and external typed arrays a bit

src/x87/lithium-codegen-x87.cc

Index: src/x87/lithium-codegen-x87.cc
diff --git a/src/x87/lithium-codegen-x87.cc b/src/x87/lithium-codegen-x87.cc
index fd2d3bba7e37709dcdd5b23095b83f588dbfe4b3..af118d5edfed23dbd0765b800e567bf5ce56347a 100644
--- a/src/x87/lithium-codegen-x87.cc
+++ b/src/x87/lithium-codegen-x87.cc
@@ -5497,14 +5497,10 @@ void LCodeGen::DoCheckArrayBufferNotNeutered(
   Register view = ToRegister(instr->view());
   Register scratch = ToRegister(instr->scratch());
 
-  Label has_no_buffer;
   __ mov(scratch, FieldOperand(view, JSArrayBufferView::kBufferOffset));
-  __ JumpIfSmi(scratch, &has_no_buffer);
   __ test_b(FieldOperand(scratch, JSArrayBuffer::kBitFieldOffset),
             1 << JSArrayBuffer::WasNeutered::kShift);
   DeoptimizeIf(not_zero, instr, Deoptimizer::kOutOfBounds);
-
-  __ bind(&has_no_buffer);
 }