Fix failure with LTS ubuntu

Old file use  ITSF\003\000\000\000\x60\000\000\000\001\000\000\000 instead of
ITSF\003\000\000\000\x60\000\000\000.

Use old magic block

Signed-off-by: Bastien ROUCARIÈS <roucaries.bastien+debian@gmail.com>
Fix another false positive for minified source-is-missing

Signed-off-by: Bastien ROUCARIÈS <roucaries.bastien+debian@gmail.com>