Mark passthru() as RC0

This function only returns null/false, RC1 does not make sense.

Author: nikic

ext/opcache/Optimizer/zend_func_info.c

@@ -195,7 +195,7 @@ static const func_info_t func_infos[] = {
 	F1("system",                       MAY_BE_FALSE | MAY_BE_STRING),
 	F1("escapeshellcmd",               MAY_BE_STRING),
 	F1("escapeshellarg",               MAY_BE_STRING),
-	F1("passthru",                     MAY_BE_NULL | MAY_BE_FALSE),
+	F0("passthru",                     MAY_BE_NULL | MAY_BE_FALSE),
 	F1("shell_exec",                   MAY_BE_NULL | MAY_BE_FALSE | MAY_BE_STRING),
 #ifdef PHP_CAN_SUPPORT_PROC_OPEN
 	F1("proc_open",                    MAY_BE_FALSE | MAY_BE_RESOURCE),