消除部分warning

common/Tnb.Common/Security/EqualityHelper.cs

@@ -1,4 +1,5 @@
-using JNPF.DependencyInjection;
+using System.Diagnostics.CodeAnalysis;
+using JNPF.DependencyInjection;
 
 namespace JNPF.Common.Security;
 
@@ -49,14 +50,14 @@ public static class EqualityHelper<T>
             : this(keySelector, EqualityComparer<TV>.Default)
         { }
 
-        public bool Equals(T x, T y)
+        public bool Equals(T? x, T? y)
         {
             return _comparer.Equals(_keySelector(x), _keySelector(y));
         }
 
-        public int GetHashCode(T obj)
+        public int GetHashCode([DisallowNull] T obj)
         {
-            return _comparer.GetHashCode(_keySelector(obj));
+            return _comparer.GetHashCode(_keySelector(obj)!);
         }
     }
 }