Fix a mistake check on string::find not comparing against string::npos
Fix a mistake check on string::find not comparing against string::npos

* Reported by Coverity Scan

Zorro666/renderdoc,Zorro666/renderdoc,googlestadia/renderdoc,Zorro666/renderdoc,cgmb/renderdoc,TurtleRockStudios/renderdoc_public,cgmb/renderdoc,etnlGD/renderdoc,baldurk/renderdoc,michaelrgb/renderdoc,TurtleRockStudios/renderdoc_public,etnlGD/renderdoc,etnlGD/renderdoc,michaelrgb/renderdoc,googlestadia/renderdoc,baldurk/renderdoc,cgmb/renderdoc,baldurk/renderdoc,michaelrgb/renderdoc,Zorro666/renderdoc,cgmb/renderdoc,Zorro666/renderdoc,etnlGD/renderdoc,googlestadia/renderdoc,TurtleRockStudios/renderdoc_public,baldurk/renderdoc,googlestadia/renderdoc,etnlGD/renderdoc,TurtleRockStudios/renderdoc_public,googlestadia/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,googlestadia/renderdoc,cgmb/renderdoc,Zorro666/renderdoc,michaelrgb/renderdoc,etnlGD/renderdoc,baldurk/renderdoc,TurtleRockStudios/renderdoc_public,michaelrgb/renderdoc