/proc/<pid>/stat was improperly parsed. When skipping a field, a while
loop is used:
while \( ' ' \!= \*\(cp++\)\) ;
After the execution of the while loop, `*cp` is a non-space
character. There is no need to increment `cp` again. Moreover, the
loop to skip 11 elements only skipped 10 elements. Same for the loop
that needed to skip 9 elements: only 8 elements were skipped.
Tested on NetSNMP 5.7.1 and on master. 5.4 does not have this code.