Fix another -Wsign-compare issue for GCC 4.9.2

src/deoptimizer.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/codegen.h"
 #include "src/cpu-profiler.h"
 #include "src/deoptimizer.h"
@@ skipping 2584 matching lines @@
       if (is_smi) {
         return Smi::FromInt(static_cast<int32_t>(int_value));
       }
       break;
     }
 
     case kBoolBit: {
       if (uint32_value() == 0) {
         return isolate()->heap()->false_value();
       } else {
-        CHECK_EQ(1, uint32_value());
+        CHECK_EQ(1U, uint32_value());
         return isolate()->heap()->true_value();
       }
     }
 
     default:
       break;
   }
 
   // If we could not get the value without allocation, return the arguments
   // marker.
@@ skipping 889 matching lines @@
       DCHECK(value_info->IsMaterializedObject());
 
       value_info->value_ =
           Handle<Object>(previously_materialized_objects->get(i), isolate_);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8