Assign result from `mClampF`

Engine/source/lighting/common/projectedShadow.cpp

@@ -395,7 +395,7 @@ void ProjectedShadow::_calcScore( const SceneRenderState *state )
    F32 secs = mFloor( (F32)msSinceLastRender / 1000.0f );
    
    mScore = pct + secs;
-   mClampF( mScore, 0.0f, 2000.0f );
+   mScore = mClampF( mScore, 0.0f, 2000.0f );
 }
 
 void ProjectedShadow::update( const SceneRenderState *state )