Asserts on free and alloc

include/sta/rtos/mempool.hpp

@@ -49,7 +49,7 @@ namespace sta
          * 
          * @param block names the block to free.
         */
-        osStatus_t free(void *block);
+        void free(void *block);
 
 	private:
 		osMemoryPoolId_t handle_;   /**< CMSIS RTOS2 queue handle */