error: expected parentheses around type name in sizeof expression (clang-cl)

Change-Id: Ia4814242cc20fbfe35eaff95ddd64dd94e6d69af
Reviewed-on: https://gerrit.libreoffice.org/68196
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

sal/osl/w32/socket.cxx

@@ -637,7 +637,7 @@ oslSocketResult SAL_CALL osl_getLocalHostname (rtl_uString **strLocalHostname)
                              | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR))
                         && u.getLength() < SAL_N_ELEMENTS(LocalHostname))
                     {
-                        memcpy(LocalHostname, u.getStr(), (u.getLength() + 1) * sizeof sal_Unicode);
+                        memcpy(LocalHostname, u.getStr(), (u.getLength() + 1) * sizeof (sal_Unicode));
                     }
                 }
             }