-Wuninitialized fixes

ipc/ipc_message_utils.cc

Index: ipc/ipc_message_utils.cc
diff --git a/ipc/ipc_message_utils.cc b/ipc/ipc_message_utils.cc
index 5216a8602eb680119fdade818f92217fd7e0ba3c..7c3ef66b05228cee10af5272334876d8b23eba85 100644
--- a/ipc/ipc_message_utils.cc
+++ b/ipc/ipc_message_utils.cc
@@ -455,7 +455,7 @@ void ParamTraits<LogData>::Write(Message* m, const param_type& p) {
 }
 
 bool ParamTraits<LogData>::Read(const Message* m, void** iter, param_type* r) {
-  int type;
+  int type = 0;  // clang pr9122
   bool result =
       ReadParam(m, iter, &r->channel) &&
       ReadParam(m, iter, &r->routing_id) &&
@@ -465,7 +465,8 @@ bool ParamTraits<LogData>::Read(const Message* m, void** iter, param_type* r) {
       ReadParam(m, iter, &r->receive) &&
       ReadParam(m, iter, &r->dispatch) &&
       ReadParam(m, iter, &r->params);
-  r->type = static_cast<uint16>(type);
+  if (result)  // real (but uninteresting) fix
+    r->type = static_cast<uint16>(type);
   return result;
 }