Use String8/16 c_str

Bug: 295394788
Test: make checkbuild
Change-Id: I6029b226006c4e82849411adfe539d5c43763e18
diff --git a/vdc.cpp b/vdc.cpp
index b63abbb..d3fb9c5 100644
--- a/vdc.cpp
+++ b/vdc.cpp
@@ -62,7 +62,7 @@
 static void checkStatus(std::vector<std::string>& cmd, android::binder::Status status) {
     if (status.isOk()) return;
     std::string command = ::android::base::Join(cmd, " ");
-    LOG(ERROR) << "Command: " << command << " Failed: " << status.toString8().string();
+    LOG(ERROR) << "Command: " << command << " Failed: " << status.toString8().c_str();
     exit(ENOTTY);
 }