fixed CPUTracker build warnings.

diff --git a/src/network_inspectors/perf_monitor/cpu_tracker.cc b/src/network_inspectors/perf_monitor/cpu_tracker.cc
index 2a68ae208acb758fe14d168b32dff2e7330451b7..49d3a9b6eaf515c3040d70cd1ddd5322b206b871 100644 (file)
--- a/src/network_inspectors/perf_monitor/cpu_tracker.cc
+++ b/src/network_inspectors/perf_monitor/cpu_tracker.cc
@@ -94,7 +94,7 @@ void CPUTracker::reset()
 
 void CPUTracker::process(bool)
 {
-    uint64_t user, system, wall, idle;
+    uint64_t user, system, wall;
 
     get_times(user, system, wall);