[Coverity] Fix uninitialized member, pass-by-val.

ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc

Index: ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
diff --git a/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc b/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
index 84960b713d89982bd2e017d12251443ada2243c0..58db5d2c7953e19f0c9bdd95da7bab1453a18b0d 100644
--- a/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
+++ b/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
@@ -14,6 +14,7 @@ namespace plugin {
 
 PnaclTranslateThread::PnaclTranslateThread() : subprocesses_should_die_(false),
                                                manifest_(NULL),
+                                               ld_manifest_(NULL),
                                                obj_file_(NULL),
                                                nexe_file_(NULL),
                                                pexe_wrapper_(NULL),
@@ -23,15 +24,16 @@ PnaclTranslateThread::PnaclTranslateThread() : subprocesses_should_die_(false),
   NaClXMutexCtor(&subprocess_mu_);
 }
 
-void PnaclTranslateThread::RunTranslate(pp::CompletionCallback finish_callback,
-                                        const Manifest* manifest,
-                                        const Manifest* ld_manifest,
-                                        LocalTempFile* obj_file,
-                                        LocalTempFile* nexe_file,
-                                        nacl::DescWrapper* pexe_wrapper,
-                                        ErrorInfo* error_info,
-                                        PnaclResources* resources,
-                                        Plugin* plugin) {
+void PnaclTranslateThread::RunTranslate(
+    const pp::CompletionCallback& finish_callback,
+    const Manifest* manifest,
+    const Manifest* ld_manifest,
+    LocalTempFile* obj_file,
+    LocalTempFile* nexe_file,
+    nacl::DescWrapper* pexe_wrapper,
+    ErrorInfo* error_info,
+    PnaclResources* resources,
+    Plugin* plugin) {
   PLUGIN_PRINTF(("PnaclTranslateThread::RunTranslate)\n"));
   manifest_ = manifest;
   ld_manifest_ = ld_manifest;