authgss_hash.c: fix clang compile warning
...
[ 95%] Building C object src/CMakeFiles/ntirpc.dir/authgss_hash.c.o
cd /home/kkeithle/src/ntirpc-1.3.1/src && /usr/bin/clang -DHAVE_CONFIG_H -DINET6 -DPORTMAP -D_GNU_SOURCE -Dntirpc_EXPORTS -fPIC -fPIC -I/home/kkeithle/src/ntirpc-1.3.1/ntirpc -I/home/kkeithle/src/ntirpc-1.3.1 -o CMakeFiles/ntirpc.dir/authgss_hash.c.o -c /home/kkeithle/src/ntirpc-1.3.1/src/authgss_hash.c
/home/kkeithle/src/ntirpc-1.3.1/src/authgss_hash.c:274:11: warning: taking the absolute value of unsigned type 'unsigned int' has no effect
[-Wabsolute-value]
((abs(axp->gen - gd->gen) >
^
/home/kkeithle/src/ntirpc-1.3.1/ntirpc/intrinsic.h:32:42: note: expanded from macro 'unlikely'
^
/home/kkeithle/src/ntirpc-1.3.1/src/authgss_hash.c:274:11: note: remove the call to 'abs' since unsigned values cannot be negative
((abs(axp->gen - gd->gen) >
^~~
/home/kkeithle/src/ntirpc-1.3.1/ntirpc/intrinsic.h:32:42: note: expanded from macro 'unlikely'
^
1 warning generated.
...
1 file changed
