tree-wide: use TAKE_PTR() and TAKE_FD() macros

src/shared/loop-util.c

@@ -100,14 +100,11 @@ int loop_device_make(int fd, int open_flags, LoopDevice **ret) {
                 return -ENOMEM;
 
         *d = (LoopDevice) {
-                .fd = loop,
-                .node = loopdev,
+                .fd = TAKE_FD(loop),
+                .node = TAKE_PTR(loopdev),
                 .nr = nr,
         };
 
-        loop = -1;
-        loopdev = NULL;
-
         *ret = d;
 
         return (*ret)->fd;