Null reference fix

Author: pwelter34

src/Privileged.Components/PrivilegeInputCheckbox.cs

@@ -61,7 +61,7 @@ protected override void OnParametersSet()
         if (PrivilegeContext == null)
             throw new InvalidOperationException("Component requires a cascading parameter of type PrivilegeContext.");
 
-        var subject = Subject ?? EditContext.Model.GetType().Name;
+        var subject = Subject ?? EditContext?.Model.GetType().Name;
         var qualifier = Field ?? NameAttributeValue;
 
         HasReadPermission = PrivilegeContext.Allowed(ReadAction, subject, qualifier);

src/Privileged.Components/PrivilegeInputNumber.cs

@@ -62,7 +62,7 @@ protected override void OnParametersSet()
         if (PrivilegeContext == null)
             throw new InvalidOperationException($"Component requires a cascading parameter of type {nameof(PrivilegeContext)}.");
 
-        var subject = Subject ?? EditContext.Model.GetType().Name;
+        var subject = Subject ?? EditContext?.Model.GetType().Name;
         var qualifier = Field ?? NameAttributeValue;
 
         HasReadPermission = PrivilegeContext.Allowed(ReadAction, subject, qualifier);

src/Privileged.Components/PrivilegeInputSelect.cs

@@ -62,7 +62,7 @@ protected override void OnParametersSet()
         if (PrivilegeContext == null)
             throw new InvalidOperationException($"Component requires a cascading parameter of type {nameof(PrivilegeContext)}.");
 
-        var subject = Subject ?? EditContext.Model.GetType().Name;
+        var subject = Subject ?? EditContext?.Model.GetType().Name;
         var qualifier = Field ?? NameAttributeValue;
 
         HasReadPermission = PrivilegeContext.Allowed(ReadAction, subject, qualifier);

src/Privileged.Components/PrivilegeInputText.cs

@@ -61,7 +61,7 @@ protected override void OnParametersSet()
         if (PrivilegeContext == null)
             throw new InvalidOperationException("Component requires a cascading parameter of type PrivilegeContext.");
 
-        var subject = Subject ?? EditContext.Model.GetType().Name;
+        var subject = Subject ?? EditContext?.Model.GetType().Name;
         var qualifier = Field ?? NameAttributeValue;
 
         HasReadPermission = PrivilegeContext.Allowed(ReadAction, subject, qualifier);

src/Privileged.Components/PrivilegeInputTextArea.cs

@@ -61,7 +61,7 @@ protected override void OnParametersSet()
         if (PrivilegeContext == null)
             throw new InvalidOperationException($"Component requires a cascading parameter of type {nameof(PrivilegeContext)}.");
 
-        var subject = Subject ?? EditContext.Model.GetType().Name;
+        var subject = Subject ?? EditContext?.Model.GetType().Name;
         var qualifier = Field ?? NameAttributeValue;
 
         HasReadPermission = PrivilegeContext.Allowed(ReadAction, subject, qualifier);