Fix for CONPY-178:

When a cursor was not properly cleared (all results weren't
fetched) the clear_result routine has to free result sets only
if field_count > 0.

Author: 9EOR9

mariadb/mariadb_cursor.c

@@ -386,12 +386,14 @@ static void MrdbCursor_clear_result(MrdbCursor *self)
         self->stmt)
     {
         /* free current result */
-        mysql_stmt_free_result(self->stmt);
+        if (mysql_stmt_field_count(self->stmt))
+            mysql_stmt_free_result(self->stmt);
 
         /* check if there are more pending result sets */
         while (mysql_stmt_next_result(self->stmt) == 0)
         {
-            mysql_stmt_free_result(self->stmt);
+            if (mysql_stmt_field_count(self->stmt))
+                mysql_stmt_free_result(self->stmt);
         }
     } else if (self->is_text)
     {
@@ -1631,6 +1633,8 @@ MrdbCursor_callproc(MrdbCursor *self, PyObject *args)
     PyTuple_SetItem(new_args, 0, PyUnicode_FromString(stmt));
     PyTuple_SetItem(new_args, 1, data);
 
+    MrdbCursor_clear_result(self);
+
     rc= MrdbCursor_execute(self, new_args, NULL);
 end:
     if (stmt)

testing/test/conf_test.py

@@ -13,6 +13,7 @@ def conf():
     d = {
         "user": os.environ.get('TEST_USER', 'root'),
         "host": os.environ.get('TEST_HOST', 'localhost'),
+        "unix_socket" : "/tmp/mysql.sock",
         "database": os.environ.get('TEST_DATABASE', 'testp'),
         "port": int(os.environ.get('TEST_PORT', '3306')),
     }