Add returns to avoid annoying compile-time warnings.

src/keystore.h

@@ -114,6 +114,7 @@ public:
                 return CBasicKeyStore::HaveKey(address);
             return mapCryptedKeys.count(address) > 0;
         }
+        return false;
     }
     bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const;
     bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;

src/wallet.cpp

@@ -40,6 +40,7 @@ bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector
         else
             return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
     }
+    return false;
 }
 
 bool CWallet::Unlock(const string& strWalletPassphrase)