use unsigned word for lengths to avoid overflow

diff --git a/environ.c b/environ.c
index b3e13fd6a7d326038a51189caab7ea7d2b47922f..2216a3163681a7033f7a7ae9cd70da196ffe0a20 100644 (file)
--- a/environ.c
+++ b/environ.c
@@ -193,7 +193,7 @@ ER_ReturnError(PG_ErrorInfo *pgerror,
    PG_ErrorInfo    *error;
    BOOL        partial_ok = ((flag & PODBC_ALLOW_PARTIAL_EXTRACT) != 0);
    const char  *msg;
-   SWORD       msglen, stapos, wrtlen, pcblen;
+   UWORD       msglen, stapos, wrtlen, pcblen;
 
    if (!pgerror)
        return SQL_NO_DATA_FOUND;