Allow scraper activebeforesb to be changed from network protocol with…

…out restart

src/gridcoin/scraper/scraper.cpp

@@ -1579,6 +1579,11 @@ void Scraper(bool bSingleShot)
                 _log(logattribute::INFO, "Scraper", "Sleeping for " + ToString(scraper_sleep() / 1000) +" seconds");
 
                 if (!MilliSleep(scraper_sleep())) return;
+
+                // To avoid taking a second lock on cs_main here, which happens inside SuperblockAge(), simply add
+                // scraper_sleep() to sbage, since that much time has gone by.
+                sbage += scraper_sleep();
+                nBeforeSBSleep = std::max(86400 - active_before_SB() - sbage, (int64_t) 0);
             }
         }