[PATCH 1/1] odbc32: Handle NULL attribute in SQLColAttributeW.

[Daniel Lehman]

From: Daniel Lehman

---
 dlls/odbc32/proxyodbc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/odbc32/proxyodbc.c b/dlls/odbc32/proxyodbc.c
index 46f96651b1d..00a9c1181ba 100644
--- a/dlls/odbc32/proxyodbc.c
+++ b/dlls/odbc32/proxyodbc.c
@@ -3928,7 +3928,7 @@ static SQLRETURN col_attribute_unix_w( struct handle *handle, SQLUSMALLINT col,
     INT64 attr;
     struct SQLColAttributeW_params params = { handle->unix_handle, col, field_id, char_attr, buflen, retlen, &attr };

-    if (SUCCESS((ret = ODBC_CALL( SQLColAttributeW, &params )))) *num_attr = attr;
+    if (SUCCESS((ret = ODBC_CALL( SQLColAttributeW, &params ))) && num_attr) *num_attr = attr;

if (ret == SQL_SUCCESS && SQLColAttributes_KnownStringAttribute(field_id) && char_attr &&
         retlen && *retlen != wcslen( char_attr ) * sizeof(WCHAR))