wallet: Add HasWallets

src/rpc/misc.cpp

@@ -69,7 +69,7 @@ UniValue validateaddress(const JSONRPCRequest& request)
     {
 
 #ifdef ENABLE_WALLET
-        if (!GetWallets().empty() && IsDeprecatedRPCEnabled("validateaddress")) {
+        if (HasWallets() && IsDeprecatedRPCEnabled("validateaddress")) {
             ret.pushKVs(getaddressinfo(request));
         }
 #endif

src/wallet/rpcwallet.cpp

@@ -66,7 +66,7 @@ bool EnsureWalletIsAvailable(CWallet * const pwallet, bool avoidException)
 {
     if (pwallet) return true;
     if (avoidException) return false;
-    if (GetWallets().empty()) {
+    if (!HasWallets()) {
         // Note: It isn't currently possible to trigger this error because
         // wallet RPC methods aren't registered unless a wallet is loaded. But
         // this error is being kept as a precaution, because it's possible in

src/wallet/wallet.cpp

@@ -54,6 +54,11 @@ bool RemoveWallet(CWallet* wallet)
     return true;
 }
 
+bool HasWallets()
+{
+    return !vpwallets.empty();
+}
+
 std::vector<CWallet*> GetWallets()
 {
     return vpwallets;

src/wallet/wallet.h

@@ -34,6 +34,7 @@
 
 bool AddWallet(CWallet* wallet);
 bool RemoveWallet(CWallet* wallet);
+bool HasWallets();
 std::vector<CWallet*> GetWallets();
 CWallet* GetWallet(const std::string& name);