Fix CA1822

OpenRA.Mods.Cnc/SpriteLoaders/ShpD2Loader.cs

@@ -89,7 +89,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			}
 		}
 
-		bool IsShpD2(Stream s)
+		static bool IsShpD2(Stream s)
 		{
 			var start = s.Position;
 
@@ -127,7 +127,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			return b == 5 || b <= 3;
 		}
 
-		ShpD2Frame[] ParseFrames(Stream s)
+		static ShpD2Frame[] ParseFrames(Stream s)
 		{
 			var start = s.Position;
 

OpenRA.Mods.Cnc/SpriteLoaders/ShpRemasteredLoader.cs

@@ -51,7 +51,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 		static readonly Regex FilenameRegex = new(@"^(?<prefix>.+?[\-_])(?<frame>\d{4})\.tga$");
 		static readonly Regex MetaRegex = new(@"^\{""size"":\[(?<width>\d+),(?<height>\d+)\],""crop"":\[(?<left>\d+),(?<top>\d+),(?<right>\d+),(?<bottom>\d+)\]\}$");
 
-		int ParseGroup(Match match, string group)
+		static int ParseGroup(Match match, string group)
 		{
 			return int.Parse(match.Groups[group].Value);
 		}

OpenRA.Mods.Cnc/SpriteLoaders/TmpRALoader.cs

@@ -39,7 +39,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			}
 		}
 
-		bool IsTmpRA(Stream s)
+		static bool IsTmpRA(Stream s)
 		{
 			var start = s.Position;
 
@@ -52,7 +52,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			return a == 0 && b == 0x2c73;
 		}
 
-		TmpRAFrame[] ParseFrames(Stream s)
+		static TmpRAFrame[] ParseFrames(Stream s)
 		{
 			var start = s.Position;
 			var width = s.ReadUInt16();

OpenRA.Mods.Cnc/SpriteLoaders/TmpTDLoader.cs

@@ -39,7 +39,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			}
 		}
 
-		bool IsTmpTD(Stream s)
+		static bool IsTmpTD(Stream s)
 		{
 			var start = s.Position;
 
@@ -51,7 +51,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			return a == 0 && b == 0x0D1AFFFF;
 		}
 
-		TmpTDFrame[] ParseFrames(Stream s)
+		static TmpTDFrame[] ParseFrames(Stream s)
 		{
 			var start = s.Position;
 			var width = s.ReadUInt16();

OpenRA.Mods.Cnc/SpriteLoaders/TmpTSLoader.cs

@@ -127,7 +127,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			}
 		}
 
-		bool IsTmpTS(Stream s)
+		static bool IsTmpTS(Stream s)
 		{
 			var start = s.Position;
 			s.Position += 8;
@@ -152,7 +152,7 @@ namespace OpenRA.Mods.Cnc.SpriteLoaders
 			return test == sx * sy / 2 + 52;
 		}
 
-		ISpriteFrame[] ParseFrames(Stream s)
+		static ISpriteFrame[] ParseFrames(Stream s)
 		{
 			var start = s.Position;
 			var templateWidth = s.ReadUInt32();