Fast poll callback wasn't compiling

src/org/pEp/jniadapter/AbstractEngine.java

@@ -13,6 +13,7 @@ abstract class AbstractEngine implements AutoCloseable {
 
     private Sync.MessageToSendCallback messageToSendCallback;
     private Sync.notifyHandshakeCallback notifyHandshakeCallback;
+    private Sync.NeedsFastPollCallback needsFastPollCallback;
     private native void init() throws pEpException;
     private native void release();
 
@@ -155,9 +156,9 @@ abstract class AbstractEngine implements AutoCloseable {
         this.notifyHandshakeCallback = notifyHandshakeCallback;
     }
 
-    public int needsFastPollCallFromC(Boolean fast_poll_needed) {
+    public int needsFastPollCallFromC(boolean fast_poll_needed) {
         if (needsFastPollCallback != null) {
-            needsFastPollCallback.needsFastPoll(fast_poll_needed);
+            needsFastPollCallback.needsFastPollCallFromC(fast_poll_needed);
         } else {
             throw new RuntimeException("Callback not set");
         }

src/org_pEp_jniadapter_AbstractEngine.cc

@@ -286,7 +286,7 @@ extern "C" {
             end = now + *timeout;
         }
 
-        sync_env->CallVoidMethod(sync_obj, needsFastPollMethodID, needs_fast_poll);
+        sync_env->CallIntMethod(sync_obj, needsFastPollMethodID, needs_fast_poll);
 
         while (!queue->size()){
             // TODO: add blocking dequeue