Fix out-of-bounds read in RegistryOverrideManager.

base/test/test_reg_util_win.cc

Index: base/test/test_reg_util_win.cc
diff --git a/base/test/test_reg_util_win.cc b/base/test/test_reg_util_win.cc
index 3c5753eff88c6c19d173cf3a652ecf8b902d73aa..f354b1736638bfe4d48d49d7717e6ab9568f7130 100644
--- a/base/test/test_reg_util_win.cc
+++ b/base/test/test_reg_util_win.cc
@@ -33,7 +33,8 @@ void DeleteStaleTestKeys(const base::Time& now,
   for (; iterator_test_root_key.Valid(); ++iterator_test_root_key) {
     base::string16 key_name = iterator_test_root_key.Name();
     std::vector<base::string16> tokens;
-    Tokenize(key_name, base::string16(kTimestampDelimiter), &tokens);
+    if (!Tokenize(key_name, base::string16(kTimestampDelimiter), &tokens))
+      continue;
     int64 key_name_as_number = 0;
 
     if (!base::StringToInt64(tokens[0], &key_name_as_number)) {