fix warning ('ret' may be used uninitialized in this function)

client/tarantool/tc_cli.c

@@ -458,17 +458,23 @@ int tc_cli(void)
 			continue;
 		}
 		tc_buf_str_stripws(&cmd);
-		if (delim_exists && tc_buf_str_isempty(&cmd))
-			goto next;
-		enum tc_cli_cmd_ret ret = tc_cli_cmd(cmd.data,
+		if (delim_exists && tc_buf_str_isempty(&cmd)) {
+			tc_buf_clear(&cmd);
+			if (feof(stdin)) {
+				tc_buf_free(&cmd);
+				break;
+			}
+		}
+		else {
+			enum tc_cli_cmd_ret ret = tc_cli_cmd(cmd.data,
 						     cmd.used - 1);
-		if (isatty(STDIN_FILENO))
-			add_history(cmd.data);
-next:
-		tc_buf_clear(&cmd);
-		if (ret == TC_CLI_EXIT || feof(stdin)) {
-			tc_buf_free(&cmd);
-			break;
+			if (isatty(STDIN_FILENO))
+				add_history(cmd.data);
+			tc_buf_clear(&cmd);
+			if (ret == TC_CLI_EXIT || feof(stdin)) {
+				tc_buf_free(&cmd);
+				break;
+			}
 		}
 }