Remove an assert in Bullet for the Character physics.

This assert happens all the time for character physics in debug mode.
In release mode, the assert is skipped but the code is still incorrect
although it does not cause any crash strangely.

1 files changed, 7 insertions, 4 deletions

diff --git a/extern/bullet2/src/BulletDynamics/Character/btKinematicCharacterController.cpp b/extern/bullet2/src/BulletDynamics/Character/btKinematicCharacterController.cpp
index 8f1cd20bf45..8d940e63cd3 100644
--- a/extern/bullet2/src/BulletDynamics/Character/btKinematicCharacterController.cpp
+++ b/extern/bullet2/src/BulletDynamics/Character/btKinematicCharacterController.cpp
@@ -29,10 +29,13 @@ subject to the following restrictions:
 static btVector3
 getNormalizedVector(const btVector3& v)
 {
-	btVector3 n = v.normalized();
-	if (n.length() < SIMD_EPSILON) {
-		n.setValue(0, 0, 0);
-	}
+    btScalar l = v.length();
+    btVector3 n = v;
+    if (l < SIMD_EPSILON) {
+        n.setValue(0,0,0);
+    } else {
+        n /= l;
+    }
 	return n;
 }