Do not add neighbors on page success

Might resolve #536 #540

app/src/main/java/com/hippo/ehviewer/gallery/EhPageLoader.java

@@ -126,7 +126,7 @@ public class EhPageLoader extends PageLoader2 implements SpiderQueen.OnSpiderLis
     @Override
     protected void onRequest(int index) {
         if (mSpiderQueen != null) {
-            Object object = mSpiderQueen.request(index);
+            Object object = mSpiderQueen.request(index, true);
             if (object instanceof Float) {
                 notifyPagePercent(index, (Float) object);
             } else if (object instanceof String) {
@@ -186,7 +186,9 @@ public class EhPageLoader extends PageLoader2 implements SpiderQueen.OnSpiderLis
 
     @Override
     public void onPageSuccess(int index, int finished, int downloaded, int total) {
-        notifyDataChanged(index);
+        if (mSpiderQueen != null) {
+            mSpiderQueen.request(index, false);
+        }
     }
 
     @Override

app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java

@@ -418,8 +418,8 @@ public final class SpiderQueen implements Runnable {
         return request(index, true, true, false);
     }
 
-    public Object request(int index) {
-        return request(index, true, false, true);
+    public Object request(int index, boolean addNeighbor) {
+        return request(index, true, false, addNeighbor);
     }
 
     private int getPageState(int index) {

app/src/main/java/eu/kanade/tachiyomi/ui/reader/loader/PageLoader.kt

@@ -42,10 +42,6 @@ abstract class PageLoader {
             state.compareAndSet(STATE_WAIT, STATE_READY)
     }
 
-    fun notifyDataChanged(index: Int) {
-        onRequest(index)
-    }
-
     fun notifyPageWait(index: Int) {
         mPages[index].status.value = Page.State.QUEUE
     }