Make purify happy by fixing memory leak that shows up during shutdown.

chrome/browser/metrics/metrics_service.cc

Index: chrome/browser/metrics/metrics_service.cc
diff --git a/chrome/browser/metrics/metrics_service.cc b/chrome/browser/metrics/metrics_service.cc
index f89b2a7f7258cce051f0b7e6025db9ea755e33f0..5d6159f093543f933d1f4e992ac60dd2f01b468d 100644
--- a/chrome/browser/metrics/metrics_service.cc
+++ b/chrome/browser/metrics/metrics_service.cc
@@ -349,6 +349,14 @@ MetricsService::MetricsService()
 
 MetricsService::~MetricsService() {
   SetRecording(false);
+  if (pending_log_) {

[darin (slow to review), 2009/01/28 09:18:27]

nit: there's no need to null-check a pointer before calling delete on it. 
"delete NULL" is a no-op.

+    delete pending_log_;
+    pending_log_ = NULL;
+  }
+  if (current_log_) {
+    delete current_log_;
+    current_log_ = NULL;
+  }
 }
 
 void MetricsService::SetUserPermitsUpload(bool enabled) {