Change dataAtFetch to type SQLLEN

Parameter strLenOrIndPtr for SQLBindCol() should be SQLLEN as opposed to SQLUINTEGER; the latter will cause 32bits of garbage data to be  passed to driver under 64-bit mode.

src/odbctest/fhrslt.c

@@ -853,7 +853,7 @@ BOOL INTFUN UpdateBoundColumn(lpCONNECTIONINFO lpCI,UWORD icol,SWORD fCType,
 //| Returns:
 //|	The return code from the function
 //*---------------------------------------------------------------------------------
-static SQLUINTEGER dataAtFetch = SQL_DATA_AT_FETCH;
+static SQLLEN dataAtFetch = SQL_DATA_AT_FETCH;
 RETCODE INTFUN lpSQLBindCol(STD_FH_PARMS)
 {
 	RETCODE					rc;