COMP: Format string vulnerability

CID 103248 An attacker could craft a format string containing
unexpected formatting directives and force a buffer overflow, which
may be used to take control of the application.

In main: An unscrutinized value from an untrusted source used to
construct a format string

Change-Id: I5e41c4192920019f28777fefb0c81773c2fce971
Merge topic 'Coverity_OtsuMultipleThresholdImageFilter'

08c73dd COMP: Format string vulnerability