Return<*> getStatus().isOk() -> isOk()

Bug: 31348667
Test: compiles
Change-Id: I8f1fb98732b6e48fc7ef099d5ca85f6e91014921
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index 3555075..b952fd7 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -91,7 +91,7 @@
 template<typename T, typename U>
 T unwrapRet(Return<T>& ret, const U& default_val)
 {
-    return (ret.getStatus().isOk()) ? static_cast<T>(ret) :
+    return (ret.isOk()) ? static_cast<T>(ret) :
         static_cast<T>(default_val);
 }
 
@@ -146,7 +146,7 @@
 void Composer::registerCallback(const sp<IComposerCallback>& callback)
 {
     auto ret = mClient->registerCallback(callback);
-    if (!ret.getStatus().isOk()) {
+    if (!ret.isOk()) {
         ALOGE("failed to register IComposerCallback");
     }
 }