Crash fix for non finite target in editing motion

indra/llcharacter/lleditingmotion.cpp

@@ -214,8 +214,10 @@ BOOL LLEditingMotion::onUpdate(F32 time, U8* joint_mask)
 	target = target * target_dist;
 	if (!target.isFinite())
 	{
-		llerrs << "Non finite target in editing motion with target distance of " << target_dist << 
+		// Don't error out here, set a fail-safe target vector
+		llwarns << "Non finite target in editing motion with target distance of " << target_dist << 
 			" and focus point " << focus_pt << llendl;
+		target.setVec(1.f, 1.f, 1.f);
 	}
 	
 	mTarget.setPosition( target + mParentJoint.getPosition());