fix headlinesfragment loading constantly if received < request size

org.fox.ttrss/src/main/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.fox.ttrss"
-    android:versionCode="410"
-    android:versionName="1.176" >
+    android:versionCode="411"
+    android:versionName="1.177" >
 
     <uses-sdk
         android:minSdkVersion="16"

org.fox.ttrss/src/main/java/org/fox/ttrss/HeadlinesFragment.java

@@ -638,6 +638,10 @@ public class HeadlinesFragment extends Fragment implements OnItemClickListener,
 							m_list.addFooterView(m_topChangedView, null, false);
 						}
 
+						if (m_amountLoaded < HEADLINES_REQUEST_SIZE) {
+							m_lazyLoadDisabled = true;
+						}
+
 						HeadlinesFragment.this.m_firstId = m_firstId;
 
 						m_adapter.notifyDataSetChanged();