Typo.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@672 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/OctTree.h

@@ -316,7 +316,7 @@ private:
 							break;
 						}
 
-					if (!inFrustum) // all edges outside
+					if (!boxInFrustum) // all edges outside
 						return;
 				}
 			}