--- a/layout/style/nsStyleStruct.h
+++ b/layout/style/nsStyleStruct.h
@@ -2748,17 +2748,17 @@ struct MOZ_NEEDS_MEMMOVABLE_MEMBERS nsSt
 
   bool IsContainPaint() const {
     return NS_STYLE_CONTAIN_PAINT & mContain;
   }
 
   /* Returns whether the element has the -moz-transform property
    * or a related property. */
   bool HasTransformStyle() const {
-    return mSpecifiedTransform != nullptr ||
+    return mSpecifiedTransform ||
            mTransformStyle == NS_STYLE_TRANSFORM_STYLE_PRESERVE_3D ||
            (mWillChangeBitField & NS_STYLE_WILL_CHANGE_TRANSFORM);
   }
 
   bool HasPerspectiveStyle() const {
     return mChildPerspective.GetUnit() == eStyleUnit_Coord;
   }