Restore resolvingstack even when exception is thrown.

Author: Bobris

BTDB/IOC/ContainerImpl.cs

@@ -275,8 +275,14 @@ public object ResolveKeyed(object? key, Type type)
                 };
                 ctxImpl.RegisterLazyFactory(nestedType, lazyFactory);
                 var backupResolvingStack = ctxImpl.BackupResolvingStack();
-                nestedFactory = CreateFactory(ctx, nestedType, key);
-                ctxImpl.RestoreResolvingStack(backupResolvingStack);
+                try
+                {
+                    nestedFactory = CreateFactory(ctx, nestedType, key);
+                }
+                finally
+                {
+                    ctxImpl.RestoreResolvingStack(backupResolvingStack);
+                }
                 if (nestedFactory == null) return null;
                 return lazyFactory;
             }