spotbugs fixes all over

core/java/src/net/i2p/data/BlindData.java

@@ -238,7 +238,7 @@ public class BlindData {
     /**
      *  @since 0.9.41
      */
-    public boolean getSecretRequired() {
+    public synchronized boolean getSecretRequired() {
         return _secretRequired;
     }
 
@@ -253,7 +253,7 @@ public class BlindData {
     /**
      *  @since 0.9.41
      */
-    public boolean getAuthRequired() {
+    public synchronized boolean getAuthRequired() {
         return _authRequired;
     }
 

core/java/src/net/i2p/util/SimpleTimer.java

@@ -157,8 +157,9 @@ public class SimpleTimer {
             
             if ( (_events.size() != _eventTimes.size()) ) {
                 _log.error("Skewed events: " + _events.size() + " for " + _eventTimes.size());
-                for (TimedEvent evt : _eventTimes.keySet()) {
-                    Long when = _eventTimes.get(evt);
+                for (Map.Entry<TimedEvent, Long> e : _eventTimes.entrySet()) {
+                    TimedEvent evt = e.getKey();
+                    Long when = e.getValue();
                     TimedEvent cur = _events.get(when);
                     if (cur != evt) {
                         _log.error("event " + evt + " @ " + when + ": " + cur);