scheduler: don't start second vote on empty server

Author: Mistrick

cstrike/addons/amxmodx/scripting/map_manager_scheduler.sma

@@ -9,7 +9,7 @@
 #endif
 
 #define PLUGIN "Map Manager: Scheduler"
-#define VERSION "0.1.9"
+#define VERSION "0.1.10"
 #define AUTHOR "Mistrick"
 
 #pragma semicolon 1
@@ -446,6 +446,10 @@ public mapm_analysis_of_results(type, total_votes)
         return ALLOW_VOTE;
     }
 
+    if(get_players_num() == 0) {
+        return ALLOW_VOTE;
+    }
+
     new max_items = mapm_get_count_maps_in_vote();
 
     if(max_items <= 2) {