* Fix new snapshot code on ARM.

src/x64/assembler-x64.h

Index: src/x64/assembler-x64.h
===================================================================
--- src/x64/assembler-x64.h	(revision 3154)
+++ src/x64/assembler-x64.h	(working copy)
@@ -458,6 +458,11 @@
   // the relative displacements stored in the code.
   static inline Address target_address_at(Address pc);
   static inline void set_target_address_at(Address pc, Address target);
+  // This sets the branch destination (which is in the instruction on x64).
+  inline static void set_target_at(Address instruction_payload,
+                                   Address target) {
+    set_target_address_at(instruction_payload, target);
+  }
   inline Handle<Object> code_target_object_handle_at(Address pc);
   // Number of bytes taken up by the branch target in the code.
   static const int kCallTargetSize = 4;  // Use 32-bit displacement.