Fixed last opened booklet page being opened agin: could've opened nothing and not have initialized the book sometimes

src/main/java/ellpeck/actuallyadditions/util/playerdata/PersistentClientData.java

@@ -59,12 +59,12 @@ public class PersistentClientData{
                 if(currentChapter != null){
                     gui.openChapter(currentChapter, currentPage);
                 }
+                return;
             }
-            else{
+        }
+        //If everything fails, initialize the front page
         gui.openIndexEntry(null, 1, true);
     }
-        }
-    }
 
     public static void setBoolean(String name, boolean bool){
         NBTTagCompound compound = getCompound();