Fix md5sum printing a stale checksum for missing files.

tools/android/md5sum/md5sum.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Md5sum implementation for Android. This version handles files as well as
 // directories. Its output is sorted by file path.
 
 #include <fstream>
 #include <iostream>
 #include <set>
@@ skipping 61 matching lines @@
 int main(int argc, const char* argv[]) {
   if (argc < 2) {
     LOG(ERROR) << "Usage: md5sum <path/to/file_or_dir>...";
     return 1;
   }
   const std::set<std::string> files = MakeFileSet(argv + 1);
   bool failed = false;
   std::string digest;
   for (std::set<std::string>::const_iterator it = files.begin();
        it != files.end(); ++it) {
-    if (!MD5Sum(it->c_str(), &digest))
+    if (!MD5Sum(it->c_str(), &digest)) {
       failed = true;
-    base::FilePath file_path(*it);
-    std::cout << digest << "  "
-              << base::MakeAbsoluteFilePath(file_path).value() << std::endl;
+    } else {
+      base::FilePath file_path(*it);
+      std::cout << digest << "  "
+                << base::MakeAbsoluteFilePath(file_path).value() << std::endl;
+    }
   }
   return failed;
 }