Bluetooth: Fix mapping of device address to HCI id.

The previous code always returned the id of the first device in the
list.

Change-Id: I6f3cde2405d53eab009d7409d9e3c6b47d97e53b
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

src/bluetooth/bluez/hcimanager.cpp

@@ -136,7 +136,7 @@ int HciManager::hciForAddress(const QBluetoothAddress &deviceAdapter)
 
         int result = memcmp(&adapter, &devInfo.bdaddr, sizeof(bdaddr_t));
         if (result == 0 || deviceAdapter.isNull()) // addresses match
-            return devRequest->dev_id;
+            return devInfo.dev_id;
     }
 
     return -1;