Fix background compilation issues when creating snapshots.

runtime/bin/main.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_tools_api.h"
@@ skipping 1186 matching lines @@
                                      char** isolate_snapshot_fname) {
   intptr_t len = snprintf(NULL, 0, "%s.%s", filename, kVMIsolateSuffix);
   *vm_snapshot_fname = new char[len + 1];
   snprintf(*vm_snapshot_fname, len + 1, "%s.%s", filename, kVMIsolateSuffix);
 
   len = snprintf(NULL, 0, "%s.%s", filename, kIsolateSuffix);
   *isolate_snapshot_fname = new char[len + 1];
   snprintf(*isolate_snapshot_fname, len + 1, "%s.%s", filename, kIsolateSuffix);
 }
 
+
 static void GenerateFullSnapshot() {
   // Create a full snapshot of the script.
   Dart_Handle result;
   uint8_t* vm_isolate_buffer = NULL;
   intptr_t vm_isolate_size = 0;
   uint8_t* isolate_buffer = NULL;
   intptr_t isolate_size = 0;
   char* vm_snapshot_fname = NULL;
   char* isolate_snapshot_fname = NULL;
 
@@ skipping 487 matching lines @@
   Platform::Exit(Process::GlobalExitCode());
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   dart::bin::main(argc, argv);
   UNREACHABLE();
 }