Fix a memory leak

src/Ionpump.cpp

@@ -215,7 +215,8 @@ void Ionpump::always_executed_hook()
 		// Fallback to StatMaskX
 		get_statmask();
 	}
-	
+	if (devattrs)
+		delete devattrs;
 
 	/*----- PROTECTED REGION END -----*/	//	Ionpump::always_executed_hook
 }