warning: variable 'retval' set but not used

[xoxota99]

Getting this warning at compile time. Thought you should know:

lib/GeekFactory Shell Library_ID1946/Shell.c:270:22: warning: variable 'retval' set but not used [-Wunused-but-set-variable]
unsigned int i = 0, retval = 0;

[geekfactory]

This is a known issue on the library, we shall take care of this on the next version.

Thank you!