fix another mistake

(cherry picked from commit bec0121733cc5777c4d3fde8e9ff56fe68c039d3)

diff --git a/Zend/zend_exceptions.c b/Zend/zend_exceptions.c
index f3143b942da9b8116b55e4ff6e2188e2cd7b49a7..6e4962dbf2e7a3f06080b10f5620b2ffc02e6fab 100644 (file)
--- a/Zend/zend_exceptions.c
+++ b/Zend/zend_exceptions.c
@@ -306,7 +306,7 @@ ZEND_METHOD(exception, __construct)
 #define CHECK_EXC_TYPE(id, type) \
        pvalue = zend_read_property_ex(i_get_exception_base(object), (object), CG(known_strings)[id], 1, &value); \
        if (Z_TYPE_P(pvalue) != IS_NULL && Z_TYPE_P(pvalue) != type) { \
-               zend_unset_property(i_get_exception_base(object), object, "previous", sizeof("previous")-1); \
+               zend_unset_property(i_get_exception_base(object), object, ZSTR_VAL(CG(known_strings)[id]), ZSTR_LEN(CG(known_strings)[id])); \
        }
 
 ZEND_METHOD(exception, __wakeup)