JS: Fixed typo bug, should be interning a vec4
JS: Fixed typo bug, should be interning a vec4

This does not currently affect the program, but better to get it.

Signed-off-by: Matt Chudleigh <0ca390ed93f516590d05286882efa52bb3b35616@gmail.com>
Signed-off-by: Harvey Harrison <eadbd6b462bf3c97df0300a934c12bc2e5d1fe51@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim