libusbg: Replace sprintf with snprintf.
libusbg: Replace sprintf with snprintf.

Usage of sprintf() may be dangerous in some cases
so use snprintf() to avoid writing after allocated
memory.

Signed-off-by: Krzysztof Opasiak <8064eda6f94b3817252b7d7649cf754592f63500@samsung.com>

pszewczyk/libusbg,pszewczyk/libusbg