Fix compilation warnings (embedded library, Windows build)

libmysqld/lib_sql.cc

@@ -285,7 +285,7 @@ static int emb_stmt_execute(MYSQL_STMT *stmt)
   my_bool res;
 
   int4store(header, stmt->stmt_id);
-  header[4]= stmt->flags;
+  header[4]= (uchar) stmt->flags;
   thd= (THD*)stmt->mysql->thd;
   thd->client_param_count= stmt->param_count;
   thd->client_params= stmt->params;
@@ -848,7 +848,7 @@ void Protocol_text::remove_last_row()
 {
   MYSQL_DATA *data= thd->cur_data;
   MYSQL_ROWS **last_row_hook= &data->data;
-  uint count= data->rows;
+  my_ulonglong count= data->rows;
   DBUG_ENTER("Protocol_text::remove_last_row");
   while (--count)
     last_row_hook= &(*last_row_hook)->next;