Fix tilde expansion of paths with no user like ~/foo.

The '/' separator was missing in the resulting path.

plugins/sudoers/exptilde.c

@@ -86,7 +86,7 @@ expand_tilde(char **path, const char *user)
 	debug_return_bool(false);
     }
 
-    len = asprintf(&npath, "%s%s%s", pw->pw_dir, slash ? "/" : "", opath);
+    len = asprintf(&npath, "%s%s%s", pw->pw_dir, *opath ? "/" : "", opath);
     sudo_pw_delref(pw);
     if (len == -1) {
 	sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));

plugins/sudoers/regress/exptilde/check_exptilde.c

@@ -42,7 +42,9 @@ struct test_data {
     { "foo/bar", NULL, NULL, false },
     { "~root", "/", NULL, true },
     { "~", "/home/millert", "millert", true },
+    { "~/foo", "/home/millert/foo", "millert", true },
     { "~millert", "/home/millert", "millert", true },
+    { "~millert/bar", "/home/millert/bar", "millert", true },
     { NULL }
 };