Fix some Lint issues

brouter-util/src/main/java/btools/util/CompactLongMap.java

@@ -224,6 +224,7 @@ public class CompactLongMap<V> {
 
 
   // does sorted array "a" contain "id" ?
+  @SuppressWarnings("unchecked")
   private boolean contains(int idx, long id, boolean doPut) {
     long[] a = al[idx];
     int offset = a.length;
@@ -243,6 +244,7 @@ public class CompactLongMap<V> {
     return false;
   }
 
+  @SuppressWarnings("unchecked")
   protected void moveToFrozenArrays(long[] faid, List<V> flv) {
     for (int i = 1; i < MAXLISTS; i++) {
       pa[i] = 0;

brouter-util/src/main/java/btools/util/SortedHeap.java

@@ -19,6 +19,7 @@ public final class SortedHeap<V> {
   /**
    * @return the lowest key value, or null if none
    */
+  @SuppressWarnings("unchecked")
   public V popLowestKeyValue() {
     SortedBin bin = firstNonEmpty;
     if (firstNonEmpty == null) {