Use ArgumentNullException.ThrowIfNull helper method

Did a simple search/replace on the whole repo (except the RSSDP project)
This reduces LOC and should improve performance (methods containing a throw statement don't get inlined)

```
if \((\w+) == null\)
\s+\{
\s+throw new ArgumentNullException\((.*)\);
\s+\}
```

```
ArgumentNullException.ThrowIfNull($1);
```

1 files changed, 3 insertions, 12 deletions

diff --git a/Jellyfin.Networking/Manager/NetworkManager.cs b/Jellyfin.Networking/Manager/NetworkManager.cs
index fd0665dbdd..9e06cdfe71 100644
--- a/Jellyfin.Networking/Manager/NetworkManager.cs
+++ b/Jellyfin.Networking/Manager/NetworkManager.cs
@@ -353,10 +353,7 @@ namespace Jellyfin.Networking.Manager
         public string GetBindInterface(IPObject source, out int? port)
         {
             port = null;
-            if (source == null)
-            {
-                throw new ArgumentNullException(nameof(source));
-            }
+            ArgumentNullException.ThrowIfNull(source);
 
             // Do we have a source?
             bool haveSource = !source.Address.Equals(IPAddress.None);
@@ -476,10 +473,7 @@ namespace Jellyfin.Networking.Manager
         /// <inheritdoc/>
         public bool IsInLocalNetwork(IPAddress address)
         {
-            if (address == null)
-            {
-                throw new ArgumentNullException(nameof(address));
-            }
+            ArgumentNullException.ThrowIfNull(address);
 
             if (address.Equals(IPAddress.None))
             {
@@ -499,10 +493,7 @@ namespace Jellyfin.Networking.Manager
         /// <inheritdoc/>
         public bool IsPrivateAddressRange(IPObject address)
         {
-            if (address == null)
-            {
-                throw new ArgumentNullException(nameof(address));
-            }
+            ArgumentNullException.ThrowIfNull(address);
 
             // See conversation at https://github.com/jellyfin/jellyfin/pull/3515.
             if (TrustAllIP6Interfaces && address.AddressFamily == AddressFamily.InterNetworkV6)