Fix func info for chop()

chop() is an alias of rtrim() and may return copied strings, so
should use FN.

Author: nikic

ext/opcache/Optimizer/zend_func_info.c

@@ -220,6 +220,7 @@ static const func_info_t func_infos[] = {
 	FN("addslashes",                   MAY_BE_STRING),
 	F1("addcslashes",                  MAY_BE_STRING),
 	FN("rtrim",                        MAY_BE_STRING),
+	FN("chop",                         MAY_BE_STRING),
 	FN("str_replace",                  MAY_BE_STRING | MAY_BE_ARRAY | MAY_BE_ARRAY_KEY_ANY | MAY_BE_ARRAY_OF_STRING | MAY_BE_ARRAY_OF_ARRAY | MAY_BE_ARRAY_OF_OBJECT),
 	FN("str_ireplace",                 MAY_BE_STRING | MAY_BE_ARRAY | MAY_BE_ARRAY_KEY_ANY | MAY_BE_ARRAY_OF_STRING | MAY_BE_ARRAY_OF_ARRAY | MAY_BE_ARRAY_OF_OBJECT),
 	F1("str_repeat",                   MAY_BE_NULL | MAY_BE_STRING),
@@ -244,7 +245,6 @@ static const func_info_t func_infos[] = {
 	F0("parse_str",                    MAY_BE_NULL),
 	F1("str_getcsv",                   MAY_BE_NULL | MAY_BE_ARRAY | MAY_BE_ARRAY | MAY_BE_ARRAY_KEY_LONG | MAY_BE_ARRAY_OF_NULL | MAY_BE_ARRAY_OF_STRING),
 	F1("str_pad",                      MAY_BE_NULL | MAY_BE_STRING),
-	F1("chop",                         MAY_BE_STRING),
 	F1("strchr",                       MAY_BE_FALSE | MAY_BE_STRING),
 	F1("sprintf",                      MAY_BE_FALSE | MAY_BE_STRING),
 	F0("printf",                       MAY_BE_FALSE | MAY_BE_LONG),