Fix the build error using gcc 13

Fix the build error using gcc 13

In the function "resourced_proc_dump" from src/process/proc-main.c, it
concatenates directory and filename and writes it into a buffer using
snprintf.
In this situation, the gcc-13 compiler complains about: the length of
directory + filename can be greater than the size of the buffer, so
it should be handled.
It is already handled by checking the lengths of the directory &
filename but the compiler don't know about it.
To fix this situation, codes for checking the return value of snprintf
have been added.

Change-Id: I2776c5164c57323212e09377ca0eff1f55279ec6
Signed-off-by: SangYoun Kwak <sy.kwak@samsung.com>