Fix object initialization when slack tracking for it's map is still enabled.

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 8ab676f39b2a91d13c6567da46fc7370810b952c..5677554fa08aedd9426c84a7a6a7bdd6676503eb 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -763,12 +763,8 @@ class MacroAssembler: public Assembler {
                 Label* gc_required,
                 AllocationFlags flags);
 
-  void Allocate(Register object_size,
-                Register result,
-                Register scratch1,
-                Register scratch2,
-                Label* gc_required,
-                AllocationFlags flags);
+  void Allocate(Register object_size, Register result, Register result_end,
+                Register scratch, Label* gc_required, AllocationFlags flags);
 
   void AllocateTwoByteString(Register result,
                              Register length,