Mesa (master): glu/sgi: Add assert to check for null pointer dereference.

[Vinson Lee]

Module: Mesa
Branch: master
Commit: e045af41469f2e2b512fc748cbad841774a39905
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e045af41469f2e2b512fc748cbad841774a39905

Author: Vinson Lee <vlee at vmware.com>
Date:   Mon Feb 15 02:14:02 2010 -0800

glu/sgi: Add assert to check for null pointer dereference.

---

 src/glu/sgi/libnurbs/nurbtess/monoChain.cc |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/glu/sgi/libnurbs/nurbtess/monoChain.cc b/src/glu/sgi/libnurbs/nurbtess/monoChain.cc
index b17b940..cb28129 100644
--- a/src/glu/sgi/libnurbs/nurbtess/monoChain.cc
+++ b/src/glu/sgi/libnurbs/nurbtess/monoChain.cc
@@ -264,6 +264,7 @@ monoChain* directedLineLoopToMonoChainLoop(directedLine* loop)
 	  prevCusp = temp;	  
 	}
     }
+  assert(ret);
   ret->insert(new monoChain(prevCusp, firstCusp));
 
   return ret;