Use correct direction multipliers during awareness check

apps/openmw/mwmechanics/mechanicsmanagerimp.cpp

@@ -1435,7 +1435,7 @@ namespace MWMechanics
             osg::Vec3f observerDir = (observer.getRefData().getBaseNode()->getAttitude() * osg::Vec3f(0,1,0));
 
             float angleRadians = std::acos(observerDir * vec / (observerDir.length() * vec.length()));
-            if (angleRadians < osg::DegreesToRadians(90.f))
+            if (angleRadians > osg::DegreesToRadians(90.f))
                 y = obsTerm * observerStats.getFatigueTerm() * fSneakNoViewMult;
             else
                 y = obsTerm * observerStats.getFatigueTerm() * fSneakViewMult;