Fix CA1825 warnings on empty array initialisation.

OpenRA.Mods.Common/Traits/Render/WithAmmoPipsDecoration.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Graphics;
@@ -39,7 +40,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 		public readonly string Palette = "chrome";
 
 		[Desc("Name(s) of AmmoPool(s) that use this decoration. Leave empty to include all pools.")]
-		public readonly string[] AmmoPools = { };
+		public readonly string[] AmmoPools = Array.Empty<string>();
 
 		public override object Create(ActorInitializer init) { return new WithAmmoPipsDecoration(init.Self, this); }
 	}

OpenRA.Mods.Common/Traits/Render/WithCrateBody.cs

@@ -22,7 +22,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 	class WithCrateBodyInfo : TraitInfo, Requires<RenderSpritesInfo>, IRenderActorPreviewSpritesInfo
 	{
 		[Desc("Easteregg sequences to use in December.")]
-		public readonly string[] XmasImages = { };
+		public readonly string[] XmasImages = Array.Empty<string>();
 
 		[Desc("Terrain types on which to display WaterSequence.")]
 		public readonly HashSet<string> WaterTerrainTypes = new HashSet<string> { "Water" };

OpenRA.Mods.Common/Traits/Render/WithDeadBridgeSpriteBody.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Graphics;
@@ -20,7 +21,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 	class WithDeadBridgeSpriteBodyInfo : WithSpriteBodyInfo
 	{
 		[ActorReference]
-		public readonly string[] RampActors = { };
+		public readonly string[] RampActors = Array.Empty<string>();
 
 		[Desc("Offset to search for the 'A' neighbour")]
 		public readonly CVec AOffset = CVec.Zero;

OpenRA.Mods.Common/Traits/Render/WithDecorationBase.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Graphics;
@@ -41,7 +42,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 		public readonly int BlinkInterval = 5;
 
 		[Desc("A pattern of ticks (BlinkInterval long) where the decoration is visible or hidden.")]
-		public readonly BlinkState[] BlinkPattern = { };
+		public readonly BlinkState[] BlinkPattern = Array.Empty<BlinkState>();
 
 		[Desc("Override blink conditions to use when defined conditions are enabled.",
 			"A dictionary of [condition string]: [pattern].")]

OpenRA.Mods.Common/Traits/Render/WithGateSpriteBody.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Graphics;
@@ -20,7 +21,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 	class WithGateSpriteBodyInfo : WithSpriteBodyInfo, IWallConnectorInfo, Requires<GateInfo>
 	{
 		[Desc("Cells (outside the gate footprint) that contain wall cells that can connect to the gate")]
-		public readonly CVec[] WallConnections = { };
+		public readonly CVec[] WallConnections = Array.Empty<CVec>();
 
 		[Desc("Wall type for connections")]
 		public readonly string Type = "wall";

OpenRA.Mods.Common/Traits/Render/WithInfantryBody.cs

@@ -9,6 +9,7 @@
  */
 #endregion
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Graphics;
@@ -35,7 +36,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 		public readonly Dictionary<string, string[]> AttackSequences = new Dictionary<string, string[]>();
 
 		[SequenceReference]
-		public readonly string[] IdleSequences = { };
+		public readonly string[] IdleSequences = Array.Empty<string>();
 
 		[SequenceReference]
 		public readonly string[] StandSequences = { "stand" };