Check for null params in VolumeShaper

Test: m media_player_service_fuzzer && adb sync data && adb shell /data/fuzz/arm64/media_player_service_fuzzer/media_player_service_fuzzer
Bug: 289674996
Change-Id: I3f31abc324914725f106fbdbab65922c741bf980
diff --git a/include/media/VolumeShaper.h b/include/media/VolumeShaper.h
index 5271e10..6208db3 100644
--- a/include/media/VolumeShaper.h
+++ b/include/media/VolumeShaper.h
@@ -1099,7 +1099,7 @@
      * internal to the VolumeHandler.
      */
     void setIdIfNecessary(const sp<VolumeShaper::Configuration> &configuration) {
-        if (configuration->getType() == VolumeShaper::Configuration::TYPE_SCALE) {
+        if (configuration && configuration->getType() == VolumeShaper::Configuration::TYPE_SCALE) {
             const int id = configuration->getId();
             if (id == -1) {
                 // Reassign to a unique id, skipping system ids.