Fix build for libzip < 0.11.2

We must not define method entries, if the actual method definitions or
the arginfo structures are not defined.

Author: cmb69

ext/zip/php_zip.c

@@ -3127,10 +3127,12 @@ static const zend_function_entry zip_class_functions[] = {
 	ZIPARCHIVE_ME(getFromName,			arginfo_ziparchive_getfromname, ZEND_ACC_PUBLIC)
 	ZIPARCHIVE_ME(getFromIndex,			arginfo_ziparchive_getfromindex, ZEND_ACC_PUBLIC)
 	ZIPARCHIVE_ME(getStream,			arginfo_ziparchive_getstream, ZEND_ACC_PUBLIC)
+#ifdef ZIP_OPSYS_DEFAULT
 	ZIPARCHIVE_ME(setExternalAttributesName,	arginfo_ziparchive_setextattrname, ZEND_ACC_PUBLIC)
 	ZIPARCHIVE_ME(setExternalAttributesIndex,	arginfo_ziparchive_setextattrindex, ZEND_ACC_PUBLIC)
 	ZIPARCHIVE_ME(getExternalAttributesName,	arginfo_ziparchive_getextattrname, ZEND_ACC_PUBLIC)
 	ZIPARCHIVE_ME(getExternalAttributesIndex,	arginfo_ziparchive_getextattrindex, ZEND_ACC_PUBLIC)
+#endif
 	ZIPARCHIVE_ME(setCompressionName,		arginfo_ziparchive_setcompname, ZEND_ACC_PUBLIC)
 	ZIPARCHIVE_ME(setCompressionIndex,		arginfo_ziparchive_setcompindex, ZEND_ACC_PUBLIC)
 #ifdef HAVE_ENCRYPTION