Fix for new potential memory leak in ClutterGLXTexturePixmap.
Fix for new potential memory leak in ClutterGLXTexturePixmap.

This fixes a new instance of glXDestroyGLXPixmap which should be
glXDestroyPixmap.

Signed-off-by: Robert Bragg <12e9293ec6b30c7fa8a0926af42807e929c1684f@linux.intel.com>

djdeath/clutter,ebassi/clutter,djdeath/clutter-android,GNOME/clutter,GNOME/clutter,spatulasnout/clutter,rkudiyarov/clutter_osx,jigpu/clutter,heysion/clutter-clone,djdeath/clutter,dlespiau/clutter,jigpu/clutter,rkudiyarov/clutter_osx,Distrotech/clutter,collects/clutter,kerrickstaley/clutter-vala,djdeath/clutter,djdeath/clutter-multithreaded,nobled/clutter,rkudiyarov/clutter_osx,kerrickstaley/clutter-vala,tardyp/clutter,collects/clutter,Distrotech/clutter,spatulasnout/clutter,ebassi/clutter,djdeath/clutter,djdeath/clutter-android,heysion/clutter-clone,djdeath/clutter-android,spatulasnout/clutter,Distrotech/clutter,ebassi/clutter,jigpu/clutter,GNOME/clutter,kerrickstaley/clutter-vala,GNOME/clutter,collects/clutter,GNOME/clutter,nobled/clutter,tardyp/clutter,heysion/clutter-clone,Distrotech/clutter,heysion/clutter-clone,djdeath/clutter-multithreaded,spatulasnout/clutter,spatulasnout/clutter,collects/clutter,dlespiau/clutter,jigpu/clutter,djdeath/clutter-multithreaded,djdeath/clutter-multithreaded,kerrickstaley/clutter-vala,heysion/clutter-clone,Distrotech/clutter,jigpu/clutter,djdeath/clutter,dlespiau/clutter,nobled/clutter,ebassi/clutter,collects/clutter,jigpu/clutter,ebassi/clutter,djdeath/clutter-android,tardyp/clutter,Distrotech/clutter,djdeath/clutter,djdeath/clutter-android,rkudiyarov/clutter_osx