Merge #12857: Avoid travis lint-include-guards error

177b875 Avoid travis lint-include-guards error (Chun Kuan Lee)

Pull request description:

Tree-SHA512: 174c8bc2223dc3b317ab84cc09066eace229d58e061058f1d2fbf503c3587b79dc772e37afc18773379f92822fef4183652f27e9b1f6dc4abc4309af11c931e0

Author: laanwj

src/walletinitinterface.h

@@ -2,8 +2,8 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef WALLETINITINTERFACE_H
-#define WALLETINITINTERFACE_H
+#ifndef BITCOIN_WALLETINITINTERFACE_H
+#define BITCOIN_WALLETINITINTERFACE_H
 
 #include <string>
 
@@ -48,4 +48,4 @@ class DummyWalletInit : public WalletInitInterface {
     void Close() override {}
 };
 
-#endif // WALLETINITINTERFACE_H
+#endif // BITCOIN_WALLETINITINTERFACE_H