Don't use String8::empty am: fed7d54dfc

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2707753

Change-Id: I06ef821e40de1fb7940086cc3cfdfe22a6b47410
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/audio/core/all-versions/default/ParametersUtil.cpp b/audio/core/all-versions/default/ParametersUtil.cpp
index e21eff2..c0e2903 100644
--- a/audio/core/all-versions/default/ParametersUtil.cpp
+++ b/audio/core/all-versions/default/ParametersUtil.cpp
@@ -51,7 +51,7 @@
     Result retval = getParam(name, &halValue);
     *value = false;
     if (retval == Result::OK) {
-        if (halValue.empty()) {
+        if (halValue.length() == 0) {
             return Result::NOT_SUPPORTED;
         }
         *value = !(halValue == AudioParameter::valueOff);