fixed GH #1488: Poco::ObjectPool shrinks if returned object is not valid

Foundation/include/Poco/ObjectPool.h

@@ -244,19 +244,19 @@ public:
 			_factory.deactivateObject(pObject);
 			if (_pool.size() < _capacity)
 			{
-				_pool.push_back(pObject);
+				try
-			}
-			else
 				{
+					_pool.push_back(pObject);
+					return;
+				}
+				catch (...)
+				{
+				}
+			}
+		}
 		_factory.destroyObject(pObject);
 		_size--;
 	}
-		}
-		else
-		{
-			_factory.destroyObject(pObject);
-		}
-	}
 
 	std::size_t capacity() const
 	{