Factor out duplicated GioMemoryFileSnapshotCtor() + NaClAppLoadFile() calls

src/trusted/service_runtime/load_file.c

+/*
+ * Copyright (c) 2013 The Native Client Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "native_client/src/trusted/service_runtime/load_file.h"
+
+#include "native_client/src/shared/gio/gio.h"
+#include "native_client/src/trusted/service_runtime/nacl_valgrind_hooks.h"
+#include "native_client/src/trusted/service_runtime/sel_ldr.h"
+
+
+NaClErrorCode NaClAppLoadFileFromFilename(struct NaClApp *nap,
+                                          const char *filename) {
+  struct GioMemoryFileSnapshot gio_file;
+  struct Gio *gio;
+  NaClErrorCode err;
+
+  NaClFileNameForValgrind(filename);
+
+  if (!GioMemoryFileSnapshotCtor(&gio_file, filename)) {
+    return LOAD_OPEN_ERROR;
+  }
+  gio = &gio_file.base.base;
+  err = NaClAppLoadFile(gio, nap);
+  if (err != LOAD_OK) {
+    return err;
+  }
+  if (gio->vtbl->Close(gio) != 0) {
+    err = LOAD_INTERNAL;
+  }
+  gio->vtbl->Dtor(gio);
+  return err;
+}