CLI: fix return value for CLI_charIn

CLI/CLI.c

@@ -135,7 +135,7 @@ bool CLI_charIn(char c)
 				}
 				FIFOBuffChar_t* fifo = FIFO;
 				FIFO = FIFOBuffChar_create();
-				ok = tryExecute(fifo);
+				ok = (tryExecute(fifo) == 0);
 				FIFOBuffChar_delete(fifo);
 				break;