bugfix: fiber cancel on schema reload timeout

Fixed fiber cancel on schema reload timeout.
Before that, an error occurred in timeout case with description:
`calling 'status' on bad self (fiber expected, got table)`.
To reproduce the error before this fix, it is enough to
checkout to the one commit back and perform the action
described in #331.

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 * Added validation of the master presence in replicaset and the 
   master connection to the `utils.get_space` method before 
   receiving the space from the connection (#331).
+* Fixed fiber cancel on schema reload timeout in `call_reload_schema`.
 
 ## [0.14.1] - 10-11-22
 

crud/common/schema.lua

@@ -37,7 +37,7 @@ local function call_reload_schema(replicasets)
     for _ = 1,replicasets_num do
         if channel:get(const.RELOAD_SCHEMA_TIMEOUT) == nil then
             for _, f in ipairs(fibers) do
-                if fiber:status() ~= 'dead' then
+                if f:status() ~= 'dead' then
                     f:cancel()
                 end
             end