mesa: reverse no_error on compressed_tex_sub_image for TEX_MODE_CURRENT

This fixes the regression introduced on "mesa: refactor
compressed_tex_sub_image function" that started to crash
KHR-GLES2.texture_3d.compressed_texture.negative_compressed_tex_sub_image

Fixes: 7df233d6 ("mesa: refactor compressed_tex_sub_image function")
Reviewed-by: Eric Anholt <eric@anholt.net>
17 jobs for !1719 with fix_no_error_tex_mode_current in 16 minutes and 15 seconds (queued for 7 seconds)
detached
Status Name Job ID Coverage
  Containers Build
passed debian #519373

00:00:25

 
  Build+Test
passed meson-arm64 #519382

00:01:33

passed meson-armhf #519381

00:01:42

passed meson-clang #519375

00:09:04

passed meson-clover #519379

00:10:17

passed meson-i386 #519383

00:02:30

passed meson-main #519378

00:11:13

passed meson-swr-glvnd #519374

00:08:24

passed meson-vulkan #519380

00:03:56

passed scons-llvm #519385

00:03:22

passed scons-nollvm #519384

00:03:03

passed scons-swr #519376

00:06:23

passed scons-win64 #519377

00:07:01

 
  Test
passed test-llvmpipe-gles2 1/4 #519386

00:03:35

passed test-llvmpipe-gles2 2/4 #519387

00:02:28

passed test-llvmpipe-gles2 3/4 #519388

00:02:17

passed test-llvmpipe-gles2 4/4 #519389

00:03:29