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

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

Index: src/crankshaft/mips/lithium-codegen-mips.cc
diff --git a/src/crankshaft/mips/lithium-codegen-mips.cc b/src/crankshaft/mips/lithium-codegen-mips.cc
index d578df6e8af9b8fd69d98d6468ce625e081bdbde..8a8aa832ea4e934dc47e14063fb93c409aa511e8 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -2900,8 +2900,8 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
     __ Branch(&done, ne, result, Operand(scratch));
     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);
       __ lw(result, FieldMemOperand(result, Cell::kValueOffset));
       DeoptimizeIf(ne, instr, Deoptimizer::kHole, result,