Fix #1472: Apply ExpressionTransforms after CombineExitsTransform to "canonicalize logic and/or"

ICSharpCode.Decompiler.Tests/TestCases/Pretty/DelegateConstruction.cs

@@ -146,6 +146,15 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
 			}
 		}
 
+		public static Func<string, string, bool> test0 = (string a, string b) => string.IsNullOrEmpty(a) || string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test1 = (string a, string b) => string.IsNullOrEmpty(a) || !string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test2 = (string a, string b) => !string.IsNullOrEmpty(a) || string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test3 = (string a, string b) => !string.IsNullOrEmpty(a) || !string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test4 = (string a, string b) => string.IsNullOrEmpty(a) && string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test5 = (string a, string b) => string.IsNullOrEmpty(a) && !string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test6 = (string a, string b) => !string.IsNullOrEmpty(a) && string.IsNullOrEmpty(b);
+		public static Func<string, string, bool> test7 = (string a, string b) => !string.IsNullOrEmpty(a) && !string.IsNullOrEmpty(b);
+
 		public static void Test(this string a)
 		{
 		}

ICSharpCode.Decompiler/IL/Transforms/CombineExitsTransform.cs

@@ -24,7 +24,10 @@ namespace ICSharpCode.Decompiler.IL.Transforms
 		{
 			if (!(function.Body is BlockContainer container && container.Blocks.Count == 1))
 				return;
-			CombineExits(container.EntryPoint);
+			var combinedExit = CombineExits(container.EntryPoint);
+			if (combinedExit == null)
+				return;
+			ExpressionTransforms.RunOnSingleStatement(combinedExit, context);
 		}
 
 		static Leave CombineExits(Block block)