Merge branch 'master' into CommandFrameworkErrors

SpigotCore_Main/src/de/steamwar/sql/Statement.java

@@ -69,6 +69,7 @@ public class Statement {
                 } catch (SQLException e) {
                     Core.getInstance().getLogger().log(Level.INFO, "Could not close statement", e);
                 }
+                statement.st = null;
             }
         }