Validate inputs to sound.Generate Fixed exit game crash to do with procedural sounds Some minor changes from TF2 SDK * Fixed some theoretical memory leaks with keyvalues * CMDLPanel pose parameter fix (PR from SDK repo) * `firstperson` disables `camortho` (PR) * ESC closes chat box even if the text entry for the message is not focused (PR) Fix unnecessary "Encountered VTF 7.5 IDs" warnings constraint library - rope material shader whitelist changes * Change the rope material shader blacklist to a whitelist (of UnlitGeneric, SplineRope and Cable shaders), and disallow materials that do not exist (!!tested on server!!) Potential crash fixes