sqlite_utils: don't dereference an empty vector.

chrome/browser/sync/util/data_encryption.cc

Index: chrome/browser/sync/util/data_encryption.cc
diff --git a/chrome/browser/sync/util/data_encryption.cc b/chrome/browser/sync/util/data_encryption.cc
index b8351476b4a4824fed131a0c9fffb1d1b7c08af5..123244748982d81fdacd601945fd5f7fc01e661f 100644
--- a/chrome/browser/sync/util/data_encryption.cc
+++ b/chrome/browser/sync/util/data_encryption.cc
@@ -17,9 +17,10 @@ using std::string;
 using std::vector;
 
 vector<uint8> EncryptData(const string& data) {
-  DATA_BLOB unencrypted_data, encrypted_data;
+  DATA_BLOB unencrypted_data = { 0 };
   unencrypted_data.pbData = (BYTE*)(data.data());
   unencrypted_data.cbData = data.size();
+  DATA_BLOB encrypted_data = { 0 };
 
   if (!CryptProtectData(&unencrypted_data, L"", NULL, NULL, NULL, 0,
                         &encrypted_data))