In unionfs_hashrem(), use LIST_FOREACH_SAFE when iterating over the list of nodes to free them.
In unionfs_hashrem(), use LIST_FOREACH_SAFE when iterating over
the list of nodes to free them.

CID:		1668
Found by:	Coverity Prevent (tm)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase