util: netlink: define cleanup function using VIR_DEFINE_AUTOPTR_FUNC

Using the new VIR_DEFINE_AUTOPTR_FUNC macro defined in
src/util/viralloc.h, define a new wrapper around an existing
cleanup function which will be called when a variable declared
with VIR_AUTOPTR macro goes out of scope. Also, drop the redundant
viralloc.h include, since that has moved from the source module into
the header.

When a variable of type virNetlinkHandle * is declared using
VIR_AUTOPTR, the function virNetlinkFree will be run automatically
on it when it goes out of scope.
Signed-off-by: NSukrit Bhatnagar <skrtbhtngr@gmail.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

src/util/virnetlink.c

@@ -72,6 +72,8 @@ typedef struct nl_handle virNetlinkHandle;
 typedef struct nl_sock virNetlinkHandle;
 # endif
 
+VIR_DEFINE_AUTOPTR_FUNC(virNetlinkHandle, virNetlinkFree)
+
 typedef struct _virNetlinkEventSrvPrivate virNetlinkEventSrvPrivate;
 typedef virNetlinkEventSrvPrivate *virNetlinkEventSrvPrivatePtr;
 struct _virNetlinkEventSrvPrivate {