tree-wide: do not wrap assert_se in extra parentheses

We were inconsitently using them in some cases, but in majority not.
Using assignment in assert_se is very common, not an exception like in
'if', so let's drop the extra parens everywhere.

src/basic/path-util.c

@@ -918,7 +918,7 @@ int systemd_installation_has_version(const char *root, unsigned minimal_version)
                 if (r < 0)
                         return r;
 
-                assert_se((c = endswith(path, "*.so")));
+                assert_se(c = endswith(path, "*.so"));
                 *c = '\0'; /* truncate the glob part */
 
                 STRV_FOREACH(name, names) {