session MAINTENANCE release build warnings

Author: michalvasko

src/session_client.c

@@ -2088,9 +2088,6 @@ nc_send_rpc(struct nc_session *session, struct nc_rpc *rpc, int timeout, uint64_
                 }
             }
             switch (rpc_g->wd_mode) {
-            case NC_WD_UNKNOWN:
-                /* cannot get here */
-                break;
             case NC_WD_ALL:
                 node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all");
                 break;
@@ -2103,6 +2100,10 @@ nc_send_rpc(struct nc_session *session, struct nc_rpc *rpc, int timeout, uint64_
             case NC_WD_EXPLICIT:
                 node = lyd_new_leaf(data, ietfncwd, "with-defaults", "explicit");
                 break;
+            default:
+                /* cannot get here */
+                node = NULL;
+                break;
             }
             if (!node) {
                 lyd_free(data);

src/session_server.c

@@ -1199,7 +1199,7 @@ static int
 nc_ps_poll_session_io(struct nc_session *session, int io_timeout, time_t now_mono, char *msg)
 {
     struct pollfd pfd;
-    int r, ret;
+    int r, ret = 0;
 #ifdef NC_ENABLED_SSH
     struct nc_session *new;
 #endif