Fix lint issues.

src/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 2018 matching lines @@
   // Don't record external references unless the heap will be serialized.
   if (rmode == external_reference &&
       !Serializer::enabled() &&
       !FLAG_debug_code) {
     return;
   }
   RelocInfo rinfo(pc_, rmode, data);
   reloc_info_writer.Write(&rinfo);
 }
 
-void Assembler::WriteInternalReference(int position, Label &bound_label) {
+void Assembler::WriteInternalReference(int position, const Label& bound_label) {
   ASSERT(bound_label.is_bound());
-  ASSERT(0 <= position && position + (int)sizeof(uint32_t) <= pc_offset());
+  ASSERT(0 <= position && position + sizeof(uint32_t) <= pc_offset());
   ASSERT(long_at(position) == 0);  // only initialize once!
 
   uint32_t label_loc = reinterpret_cast<uint32_t>(addr_at(bound_label.pos()));
   long_at_put(position, label_loc);
 }
 
 } }  // namespace v8::internal