[runtime] Avoid @@isConcatSpreadable lookup for fast path Array.prototype.concat

src/crankshaft/arm64/lithium-codegen-arm64.cc

Index: src/crankshaft/arm64/lithium-codegen-arm64.cc
diff --git a/src/crankshaft/arm64/lithium-codegen-arm64.cc b/src/crankshaft/arm64/lithium-codegen-arm64.cc
index 29eb43224e6cd5c5e7b5bda19a8fa966c4345813..fb7ba32fd666f85c7acbdca668aa31a2426c58b8 100644
--- a/src/crankshaft/arm64/lithium-codegen-arm64.cc
+++ b/src/crankshaft/arm64/lithium-codegen-arm64.cc
@@ -3297,8 +3297,8 @@ void LCodeGen::DoLoadKeyedFixed(LLoadKeyedFixed* instr) {
     __ B(ne, &done);
     if (info()->IsStub()) {
       // A stub can safely convert the hole to undefined only if the array
-      // protector cell contains (Smi) Isolate::kArrayProtectorValid. Otherwise
-      // it needs to bail out.
+      // protector cell contains (Smi) Isolate::kArrayProtectorValid.
+      // Otherwise it needs to bail out.
       __ LoadRoot(result, Heap::kArrayProtectorRootIndex);
       __ Ldr(result, FieldMemOperand(result, Cell::kValueOffset));
       __ Cmp(result, Operand(Smi::FromInt(Isolate::kArrayProtectorValid)));