Fix null-checker suppression introduced by 3.0.1 upgrade

Suppression added in https://github.com/google/ExoPlayer/commit/6f9baffa0cc7daf8cbfd5e1f6c55a908190d2041

PiperOrigin-RevId: 288475120

library/core/src/main/java/com/google/android/exoplayer2/text/dvb/DvbParser.java

@@ -481,8 +481,6 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
    *
    *
    * @return The parsed object data.
    * @return The parsed object data.
    */
    */
-  // incompatible types in argument.
-  @SuppressWarnings("nullness:argument.type.incompatible")
   private static ObjectData parseObjectData(ParsableBitArray data) {
   private static ObjectData parseObjectData(ParsableBitArray data) {
     int objectId = data.readBits(16);
     int objectId = data.readBits(16);
     data.skipBits(4); // Skip object_version_number
     data.skipBits(4); // Skip object_version_number
@@ -490,8 +488,8 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     boolean nonModifyingColorFlag = data.readBit();
     boolean nonModifyingColorFlag = data.readBit();
     data.skipBits(1); // Skip reserved.
     data.skipBits(1); // Skip reserved.
 
 
-    @Nullable byte[] topFieldData = null;
-    @Nullable byte[] bottomFieldData = null;
+    byte[] topFieldData = Util.EMPTY_BYTE_ARRAY;
+    byte[] bottomFieldData = Util.EMPTY_BYTE_ARRAY;
 
 
     if (objectCodingMethod == OBJECT_CODING_STRING) {
     if (objectCodingMethod == OBJECT_CODING_STRING) {
       int numberOfCodes = data.readBits(8);
       int numberOfCodes = data.readBits(8);