fix: set return type to null as a fn w/ return type 'void' is not a v…

…alid JSX element (#1261)

* fix: set return type to null as a fn w/ return type 'void' is not a valid JSX element

Signed-off-by: rajput-hemant <hemant.rajput_cs20@gla.ac.in>

* removed trailing semicolon

Signed-off-by: rajput-hemant <rajput.hemant2001@gmail.com>

---------

Signed-off-by: rajput-hemant <hemant.rajput_cs20@gla.ac.in>
Signed-off-by: rajput-hemant <rajput.hemant2001@gmail.com>

src/core/softShadows.tsx

@@ -162,4 +162,5 @@ export function SoftShadows({ frustum = 3.75, size = 0.005, near = 9.5, samples
       reset(gl, scene, camera)
     }
   }, [frustum, size, near, samples, rings])
+  return null
 }