Return better error message from GDBRemoteCommunication::ConnectLocally

llvm-svn: 354256
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
index 5a0f962..2e0a1a6 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
@@ -1287,9 +1287,10 @@
 
   std::unique_ptr<ConnectionFileDescriptor> conn_up(
       new ConnectionFileDescriptor());
-  if (conn_up->Connect(remote_addr, nullptr) != lldb::eConnectionStatusSuccess)
-    return llvm::make_error<llvm::StringError>("Unable to connect",
-                                               llvm::inconvertibleErrorCode());
+  Status status;
+  if (conn_up->Connect(remote_addr, &status) != lldb::eConnectionStatusSuccess)
+    return llvm::createStringError(llvm::inconvertibleErrorCode(),
+                                   "Unable to connect: %s", status.AsCString());
 
   client.SetConnection(conn_up.release());
   if (llvm::Error error = accept_status.get().ToError())