Move up label marker to proper location

Author: Abrynos

Implement.Net/TypeFactory.cs

@@ -695,6 +695,7 @@ private static void ImplementDisposeAsync(TypeBuilder typeBuilder, FieldInfo han
 
 				if (checkInstance) {
 					// } else { // this.[handlerField] is not IAsyncDisposable
+					generator.MarkLabel(disposeSyncLabel);
 
 					// if we don't know whether the handler is IDisposable for sure, we need to check the instance once again
 					if (!isAlwaysSyncDisposable) {
@@ -707,8 +708,6 @@ private static void ImplementDisposeAsync(TypeBuilder typeBuilder, FieldInfo han
 						generator.Emit(OpCodes.Brfalse_S, doNothingLabel);
 					}
 
-					generator.MarkLabel(disposeSyncLabel);
-
 					// this.[handlerField].Dispose();
 					generator.Emit(OpCodes.Ldarg_0);
 					generator.Emit(OpCodes.Ldfld, handlerField);