Fixes these dEQP failures on 9_3:
+ dEQP-GLES2.functional.shaders.struct.local.loop_nested_struct_array_vertex
+ dEQP-GLES2.functional.shaders.struct.local.loop_nested_struct_array_fragment

Change-Id: I3e3b3552fe842c8a3c04363bf966c121e40dd9dc
Reviewed-on: https://chromium-review.googlesource.com/304489Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tryjob-Request: Geoff Lang <geofflang@chromium.org>
Tested-by: Austin Kinross <aukinros@microsoft.com>