gui: add missing headers to guiutil

Author: kwvg

src/qt/guiutil.cpp

@@ -13,6 +13,8 @@
 #include "qvalidatedlineedit.h"
 #include "walletmodel.h"
 
+#include "base58.h"
+#include "chainparams.h"
 #include "init.h"
 #include "policy/policy.h"
 #include "primitives/transaction.h"