Simplify implementation of assignment-to-const checks

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index f9f8c404c220cd194350229447257244d8817f48..de575731cd37d873bfc3b0165afdbbdd2f88bc33 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -2047,7 +2047,7 @@ void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
 
 
 void FullCodeGenerator::EmitAssignment(Expression* expr) {
-  // Invalid left-hand sides are rewritten to have a 'throw
+  // Invalid left-hand sides are rewritten by the parser to have a 'throw
   // ReferenceError' on the left-hand side.
   if (!expr->IsValidLeftHandSide()) {
     VisitForEffect(expr);