Coverity 1038113: possibly out of bounds read
Coverity 1038115: memory leak on 'ack' keyword parsing failure
Coverity 1038116 & 1038117: memory leaks on 'app-layer-event' keyword parsing failure
Coverity 1038123: memory leak on 'flowint' keyword parsing failure
Coverity 1038124: memory leak on 'seq' keyword parsing failure