Do not add values to HGraph in Lithium.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index bf8b7b977d50bd181465298e13a6067ce8bc12e5..dbfb73a5a6ceca2c1a134d6b717d960f426f4521 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -5714,6 +5714,11 @@ void LCodeGen::DoDeoptimize(LDeoptimize* instr) {
 }
 
 
+void LCodeGen::DoDummy(LDummy* instr) {
+  // Nothing to see here, move on!
+}
+
+
 void LCodeGen::DoDummyUse(LDummyUse* instr) {
   // Nothing to see here, move on!
 }