shared/fstab-util: use is_device_path instead of is_device_node

Follow-up for 99299d0d5a

is_device_node() calls lstat(), causing device node
symlinks under /dev/disk/ not being compared correctly
using devnode_same().

Fixes #28585

src/shared/fstab-util.c

@@ -76,7 +76,7 @@ static int fstab_is_same_node(const char *what_fstab, const char *path) {
         if (path_equal(node, path))
                 return true;
 
-        if (is_device_node(path) && is_device_node(node))
+        if (is_device_path(path) && is_device_path(node))
                 return devnode_same(node, path);
 
         return false;