Bug#331697: Bug still present in all-experimental

[Xavier Bestel <xavier.bestel@free.fr>]

I spoke too fast. After playing longer witrh experimental, the bug is
still there:


Backtrace:
0: /usr/X11R6/bin/X(xf86SigHandler+0x80) [0x8088b60]
1: [0xffffe500]
2: /usr/X11R6/lib/modules/extensions/libGLcore.so [0x55752c9b]
3: /usr/X11R6/lib/modules/extensions/libGLcore.so(_swrast_DrawPixels+0x255) [0x557532b5]
4: /usr/X11R6/lib/modules/extensions/libGLcore.so(_mesa_DrawPixels+0x22b) [0x556b993b]
5: /usr/X11R6/lib/modules/extensions/libGLcore.so(glDrawPixels+0x35) [0x55675d75]
6: /usr/X11R6/lib/modules/extensions/libglx.so(__glXDisp_DrawPixels+0x93) [0x5562ac23]
7: /usr/X11R6/lib/modules/extensions/libglx.so(__glXRenderLarge+0x2ba) [0x5560f25a]
8: /usr/X11R6/lib/modules/extensions/libglx.so [0x55611696]
9: /usr/X11R6/bin/X(Dispatch+0x172) [0x80c6dc2]
10: /usr/X11R6/bin/X(main+0x414) [0x80d3734]
11: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xd0) [0x4102deb0]
12: /usr/X11R6/bin/X [0x80700b1]

Fatal server error:
Caught signal 11.  Server aborting