Fix some new inspections from latest resharper EAP

osu.Framework.Tests/Audio/TestAudioAdjustments.cs

···
         public void TestAdjustBoundComponentBeforeBind()
         {
             var adjustments = new AudioAdjustments();
-            var adjustments2 = new AudioAdjustments();
 
-            adjustments2.Volume.Value = 0.5f;
+            var adjustments2 = new AudioAdjustments
+            {
+                Volume =
+                {
+                    Value = 0.5f
+                }
+            };
 
             adjustments.BindAdjustments(adjustments2);
 

osu.Framework/Bindables/NonNullableBindable.cs

···
             set
             {
                 if (value == null)
-                    throw new ArgumentNullException(nameof(Value), $"Cannot set {nameof(Value)} of a {nameof(NonNullableBindable<T>)} to null.");
+                    throw new ArgumentNullException(nameof(value), $"Cannot set {nameof(Value)} of a {nameof(NonNullableBindable<T>)} to null.");
 
                 base.Value = value;
             }

osu.Framework/Graphics/Containers/GridContainer.cs

···
             set
             {
                 if (value == null)
-                    throw new ArgumentNullException(nameof(RowDimensions));
+                    throw new ArgumentNullException(nameof(value));
 
                 if (rowDimensions == value)
                     return;
···
             set
             {
                 if (value == null)
-                    throw new ArgumentNullException(nameof(ColumnDimensions));
+                    throw new ArgumentNullException(nameof(value));
 
                 if (columnDimensions == value)
                     return;

osu.Framework/Localisation/LocalisationManager.cs

···
 
 using System.Collections.Generic;
 using System.Globalization;
-using JetBrains.Annotations;
 using osu.Framework.Bindables;
 using osu.Framework.Configuration;
 
···
         /// Creates an <see cref="ILocalisedBindableString"/> which automatically updates its text according to information provided in <see cref="ILocalisedBindableString.Text"/>.
         /// </summary>
         /// <returns>The <see cref="ILocalisedBindableString"/>.</returns>
-        [NotNull]
         public ILocalisedBindableString GetLocalisedString(LocalisableString original) => new LocalisedBindableString(original, currentStorage, preferUnicode);
 
         private void updateLocale(ValueChangedEvent<string> locale)