Drop unnecessary path_equal_ptr() wrapper

path_equal already works with NULL pointers.

src/basic/path-util.h

@@ -105,10 +105,6 @@ static inline int path_simplify_alloc(const char *path, char **ret) {
         return 0;
 }
 
-static inline bool path_equal_ptr(const char *a, const char *b) {
-        return !!a == !!b && (!a || path_equal(a, b));
-}
-
 /* Note: the search terminates on the first NULL item. */
 #define PATH_IN_SET(p, ...) path_strv_contains(STRV_MAKE(__VA_ARGS__), p)
 

src/basic/stat-util.c

@@ -229,7 +229,7 @@ int null_or_empty_path_with_root(const char *fn, const char *root) {
          * When looking under root_dir, we can't expect /dev/ to be mounted,
          * so let's see if the path is a (possibly dangling) symlink to /dev/null. */
 
-        if (path_equal_ptr(path_startswith(fn, root ?: "/"), "dev/null"))
+        if (path_equal(path_startswith(fn, root ?: "/"), "dev/null"))
                 return true;
 
         r = chase_and_stat(fn, root, CHASE_PREFIX_ROOT, NULL, &st);