cgroup: typo fix

CID 163487 (#1 of 1): Unused value (UNUSED_VALUE)
assigned_pointer: Assigning value from old_name to pe->name here, but that stored value is overwritten before it can be used.

Cc: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/cgroup.c

@@ -1280,7 +1280,7 @@ static int prepare_cgroup_dir_properties(char *path, int off, CgroupDirEntry **e
 					pe->value = "a";
 					ret = restore_cgroup_prop(e->properties[j], path, off2);
 					pe->name = old_name;
-					pe->name = old_val;
+					pe->value = old_val;
 
 					if (ret < 0)
 						return -1;