NetScaler Trace: Missing break in switch (CID 281457, 727776 & 1021060)

Change-Id: I575114ba364da1b1d63eea8fc7b48c8c0e0bc99d
Reviewed-on: https://code.wireshark.org/review/5991
Reviewed-by: Anders Broman <a.broman58@gmail.com>