- Fixed bug #62475 (variant_* functions causes crash when null given as an argument)

Author: felipensp

ext/com_dotnet/com_variant.c

@@ -102,8 +102,9 @@ PHP_COM_DOTNET_API void php_com_variant_from_zval(VARIANT *v, zval *z, int codep
 {
 	OLECHAR *olestring;
 	php_com_dotnet_object *obj;
+	zend_uchar ztype = (z == NULL ? IS_NULL : Z_TYPE_P(z));
 
-	switch (Z_TYPE_P(z)) {
+	switch (ztype) {
 		case IS_NULL:
 			V_VT(v) = VT_NULL;
 			break;