Fix usage of EmitBranch in compare-minus-zero-and-branch.

src/arm/lithium-codegen-arm.h

Index: src/arm/lithium-codegen-arm.h
diff --git a/src/arm/lithium-codegen-arm.h b/src/arm/lithium-codegen-arm.h
index cbd6b9ca071dd777d962756f0e26ad1abeecad7b..7390a48e80f99492fc899984e8a5273772482d22 100644
--- a/src/arm/lithium-codegen-arm.h
+++ b/src/arm/lithium-codegen-arm.h
@@ -297,6 +297,8 @@ class LCodeGen: public LCodeGenBase {
 
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
   void EmitGoto(int block);
+
+  // EmitBranch expects to be the last instruction of a block.
   template<class InstrType>
   void EmitBranch(InstrType instr, Condition condition);
   template<class InstrType>