Ensure xNewLib_reent is reclaimed when a task is deleted.

FreeRTOS/Source/tasks.c

@@ -3086,8 +3086,13 @@ TCB_t *pxNewTCB;
 		want to allocate and clean RAM statically. */
 		portCLEAN_UP_TCB( pxTCB );
 
-		/* Free up the memory allocated by the scheduler for the task.  It is up to
-		the task to free any memory allocated at the application level. */
+		/* Free up the memory allocated by the scheduler for the task.  It is up
+		to the task to free any memory allocated at the application level. */
+		#if ( configUSE_NEWLIB_REENTRANT == 1 )
+		{
+			_reclaim_reent( &( pxTCB->xNewLib_reent ) );
+		}
+		#endif /* configUSE_NEWLIB_REENTRANT */
 		vPortFreeAligned( pxTCB->pxStack );
 		vPortFree( pxTCB );
 	}