umask.c: make use of RVAL_DECODED
umask.c: make use of RVAL_DECODED

* umask.c (sys_umask): Update for RVAL_DECODED.

Distrotech/strace,cuviper/strace,Saruta/strace,kapdop/android_external_strace,kapdop/android_external_strace,Distrotech/strace,MonkeyZZZZ/platform_external_strace,MonkeyZZZZ/platform_external_strace,vrastogi/strace,cuviper/strace,MonkeyZZZZ/platform_external_strace,Distrotech/strace,Saruta/strace,cuviper/strace,Saruta/strace,vrastogi/strace,vrastogi/strace,vrastogi/strace,cuviper/strace,Saruta/strace,Saruta/strace,cuviper/strace,MonkeyZZZZ/platform_external_strace,vrastogi/strace,MonkeyZZZZ/platform_external_strace,kapdop/android_external_strace,Distrotech/strace,kapdop/android_external_strace,Distrotech/strace,kapdop/android_external_strace