fix failure to preserve r6 in s390x asm; per ABI it is call-saved
[musl] / src / conf /
drwxr-xr-x   ..
-rw-r--r-- 448 confstr.c
-rw-r--r-- 855 fpathconf.c
-rw-r--r-- 298 legacy.c
-rw-r--r-- 96 pathconf.c
-rw-r--r-- 6393 sysconf.c