monitor_dbcall_thread: removed Hashtbl creation from loop.
monitor_dbcall_thread: removed Hashtbl creation from loop.

This is done for performance reasons, since Hashtbl creation is a
relatively expensive operation.

Signed-off-by: Rok Strniša <ef2e6fb7f9c4d68ca2b20c62606309353789e818@citrix.com>

koushikcgit/xcp-networkd,djs55/xcp-rrdd,djs55/xcp-rrdd,koushikcgit/xcp-networkd,sharady/xcp-networkd,koushikcgit/xcp-rrdd,johnelse/xcp-rrdd,djs55/squeezed,djs55/xcp-networkd,koushikcgit/xcp-rrdd,koushikcgit/xcp-rrdd,simonjbeaumont/xcp-rrdd,djs55/xcp-networkd,sharady/xcp-networkd,simonjbeaumont/xcp-rrdd,johnelse/xcp-rrdd,robhoes/squeezed