freecam: use onClientPreRender

onClientPreRender didn't exist when freecam was made, but if it did it would have been used as it can help with a 1 frame delay when setting camera position.

Author: ArranTuna

[editor]/freecam/freecam.lua

@@ -277,7 +277,7 @@ function setFreecamEnabled (x, y, z)
 	if (x and y and z) then
 	    setCameraMatrix ( x, y, z, nil, nil, nil, 0, options.fov )
 	end
-	addEventHandler("onClientRender", root, freecamFrame)
+	addEventHandler("onClientPreRender", root, freecamFrame)
 	addEventHandler("onClientCursorMove",root, freecamMouse)
 	setElementData(localPlayer, "freecam:state", true)
 
@@ -293,7 +293,7 @@ function setFreecamDisabled()
 	velocityX,velocityY,velocityZ = 0,0,0
 	speed = 0
 	strafespeed = 0
-	removeEventHandler("onClientRender", root, freecamFrame)
+	removeEventHandler("onClientPreRender", root, freecamFrame)
 	removeEventHandler("onClientCursorMove",root, freecamMouse)
 	setElementData(localPlayer, "freecam:state", false)