Add error initialization for network request class

net/cert_net/cert_net_fetcher_impl.cc

Index: net/cert_net/cert_net_fetcher_impl.cc
diff --git a/net/cert_net/cert_net_fetcher_impl.cc b/net/cert_net/cert_net_fetcher_impl.cc
index 50cc66c45923d1e85ee6c3075a5b67aa2e46f06e..d2b28190c3f00395392a3b67208f749e5a201293 100644
--- a/net/cert_net/cert_net_fetcher_impl.cc
+++ b/net/cert_net/cert_net_fetcher_impl.cc
@@ -259,7 +259,7 @@ class RequestCore : public base::RefCountedThreadSafe<RequestCore> {
   // there is no work that will be done on the network thread (e.g. when the
   // network thread has been shutdown before the request begins). See comment in
   // SignalImmediateError.
-  Error error_;
+  Error error_ = OK;
   std::vector<uint8_t> bytes_;
 
   // Indicates when |error_| and |bytes_| have been written to.