Steps to reproduce:
1. Start the native ThinLinc client
2. Open the Options and change the "Popup menu key" to 'None'
3. Login to a server
4. Observe that the hint at the top of the screen says:
"Press to open the context menu"
We shouldn't display this hint if there isn't a key bound to it.
Since this was such a small fix I bypassed the vendordrop routine and committed directly to ThinLinc. Upstream PR here:
Built and tested on Fedora 30.
Looks good. Got a confusing hint in the previous version with "None" configured, but nothing at all now. Also verified that that a properly configured menu key still gets the hint.