* libamu/wire.c: avoid potential dereferencing of a NULL pointer

* libamu/wire.c: avoid potential dereferencing of a NULL pointer
(Coverity).

* hlfsd/homedir.c (delay): remove unnecessary check for NULL
pointer (Coverity).

* fsinfo/fsi_analyze.c (analyze_dkmounts, analyze_mounts,
analyze_mounts): avoid potential dereferencing of a NULL pointer
(Coverity).

* conf/transp/transp_sockets.c (create_amq_service): avoid
potential dereferencing of a NULL pointer (Coverity).

* amd/sched.c (sigchld): properly check for the end of the waiting
process list (Coverity).

* amd/mapc.c (mapc_create): initialize 'modify' to zero (Coverity).

* amd/autil.c (amfs_mkcacheref, am_unmounted): avoid potential
dereferencing of a NULL pointer (Coverity).

* amd/amfs_generic.c (amfs_lookup_mntfs): free def_opts before
reusing it (memory leak bug detected by Coverity).
(amfs_bgmount): avoid potential dereferencing of a NULL pointer
(Coverity).

* amd/am_ops.c (merge_opts): no need to check if newstr is NULL
(bug detected by Coverity).