Clean up RemoveDeadVariableInit

ICSharpCode.Decompiler/IL/Transforms/RemoveDeadVariableInit.cs

@@ -44,7 +44,7 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 			// This is necessary to remove useless stores generated by some compilers, e.g., the F# compiler.
 			// In yield return + async, the C# compiler tends to store null/default(T) to variables
 			// when the variable goes out of scope.
-			var variableQueue = new Queue<ILVariable>(function.Variables.Where(v => v.Kind == VariableKind.Local || v.Kind == VariableKind.StackSlot));
+			var variableQueue = new Queue<ILVariable>(function.Variables);
 			while (variableQueue.Count > 0) {
 				var v = variableQueue.Dequeue();
 				if (v.Kind != VariableKind.Local && v.Kind != VariableKind.StackSlot)
@@ -58,7 +58,7 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 						} else {
 							stloc.ReplaceWith(stloc.Value);
 						}
-						if (stloc.Value is LdLoc ldloc && (ldloc.Variable.Kind == VariableKind.Local || ldloc.Variable.Kind == VariableKind.StackSlot)) {
+						if (stloc.Value is LdLoc ldloc) {
 							variableQueue.Enqueue(ldloc.Variable);
 						}
 					}