Fix a memory leak in DnsReloadTimer

net/base/host_resolver_proc.cc

Index: net/base/host_resolver_proc.cc
diff --git a/net/base/host_resolver_proc.cc b/net/base/host_resolver_proc.cc
index 473a70c32c48ffad2ab3267e23733c1ffd9dbc05..c6a011c4d381676fc1b3ff7d3cbaec78dbbd56c3 100644
--- a/net/base/host_resolver_proc.cc
+++ b/net/base/host_resolver_proc.cc
@@ -113,6 +113,7 @@ class DnsReloadTimer {
   }
 
   ~DnsReloadTimer() {
+    SlotReturnFunction(tls_index_.Get());

[wtc, 2009/11/30 19:07:46]

This only frees the thread local storage of the current
thread.  The tests need to make sure all the other threads
that use this TLS slot have terminated when we destroy
DnsReloadTimer.  You may want to add a comment to document
this.

     tls_index_.Free();
   }