Perform even less aggressive inlining of return blocks.

ICSharpCode.Decompiler/IL/ControlFlow/ControlFlowSimplification.cs

@@ -134,8 +134,7 @@ namespace ICSharpCode.Decompiler.IL.ControlFlow
 			var targetBlock = branch.TargetBlock;
 			if (targetBlock.Instructions.Count != 1 || targetBlock.FinalInstruction.OpCode != OpCode.Nop)
 				return false;
-			if (targetBlock.Parent == branch.Parent.Parent) {
-				// branch.Parent.Parent = container containing the branch
+			if (targetBlock.Parent == branch.Ancestors.OfType<BlockContainer>().FirstOrDefault()) {
 				// only simplify when jumping out of a try-finally
 				return false;
 			}

ICSharpCode.Decompiler/IL/Instructions/ILInstruction.cs

@@ -415,6 +415,17 @@ namespace ICSharpCode.Decompiler.IL
 			}
 		}
 		
+		/// <summary>
+		/// Gets the ancestors of this node (including the node itself as first element).
+		/// </summary>
+		public IEnumerable<ILInstruction> Ancestors {
+			get {
+				for (ILInstruction node = this; node != null; node = node.Parent) {
+					yield return node;
+				}
+			}
+		}
+
 		/// <summary>
 		/// Number of parents that refer to this instruction and are connected to the root.
 		/// Usually is 0 for unconnected nodes and 1 for connected nodes, but may temporarily increase to 2