Work around warning C4702: unreachable code

...introduced with 82d08580e368afbc9d73da3613845a36a89b0a8c " switch saxparser
from expat to libxml2"

Change-Id: I4e214fff0f3650b44f299f112b27c607c7936c03
cid#1213388 etc.: Make reflread.cxx more robust

incl. revert of and proper fix for 8f69c7a11bf31f7134caf4e03fbcd4c6ef86382d
"coverity#1213373 Use of untrusted scalar value," the data is tainted after all

Change-Id: I19e4d544ccf6d02afe8d6e441cae6bbdadb8a6be