gl4cComputeShaderTests: correct conversion
Bug 13124 - gl45 conformance: Fix GL45-CTS.compute_shader.max to work with giant numbers
and
Bug 13582 - Checking values from glGet* incorrectly
didn't complete the job of avoiding conversion problems.
Now, we make sure that the comparison is done in the type that won't
cause a problem.
Components: OpenGL
VK-GL-CTS public issue: 149
Affects:
KHR-GLES31.core.compute_shader.dispatch-indirect
KHR-GLES31.core.compute_shader.max
KHR-GL43.compute_shader.dispatch-indirect
KHR-GL43.compute_shader.max
Change-Id: I69047d95ca4418a84f138ac9bfa7818fea45cc64