Sqlline should set error code when -e command fails

[vlsi]

See

sqlline/src/main/java/sqlline/SqlLine.java

Lines 442 to 452 in 2a8c629

	if (commands.size() > 0) {
	// for single command execute, disable color
	getOpts().set(BuiltInProperty.COLOR, false);
	getOpts().set(BuiltInProperty.HEADER_INTERVAL, -1);
	for (String command : commands) {
	debug(loc("executing-command", command));
	dispatch(command, new DispatchCallback());
	}
	exit = true; // execute and exit

$ ./sqlline -e '!tables' && echo $?

Expected: non-zero return code
Actual:

$ ./sqlline -e '!tables' && echo return code is $?
+ java -Xmx1g -Djavax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl -jar build/libs/sqllineClasspath.jar -e '!tables'
No current connection
sqlline version 1.9.0
return code is 0