DamageOnHit only damages on successful hits. (#17758)

Content.Server/Damage/Systems/DamageOnHitSystem.cs

@@ -2,6 +2,7 @@ using Content.Server.Damage.Components;
 using Content.Shared.Damage;
 using Robust.Shared.Player;
 using Content.Shared.Weapons.Melee.Events;
+using System.Linq;
 
 namespace Content.Server.Damage.Systems;
 
@@ -17,6 +18,8 @@ public sealed class DamageOnHitSystem : EntitySystem
     // Looks for a hit, then damages the held item an appropriate amount.
     private void DamageItem(EntityUid uid, DamageOnHitComponent component, MeleeHitEvent args)
     {
+        if (args.HitEntities.Any()) {
             _damageableSystem.TryChangeDamage(uid, component.Damage, component.IgnoreResistances);
         }
+    }
 }