Improve the x86_64 return value decoder to handle most structure returns.
Switch from GetReturnValue, which was hardly ever used, to GetReturnValueObject
which is much more convenient.
Return the "return value object" as a persistent variable if requested.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@147157 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Target/ThreadPlanCallUserExpression.cpp b/source/Target/ThreadPlanCallUserExpression.cpp
index 0499a7c..6352edb 100644
--- a/source/Target/ThreadPlanCallUserExpression.cpp
+++ b/source/Target/ThreadPlanCallUserExpression.cpp
@@ -44,7 +44,7 @@
                                                 lldb::addr_t *this_arg,
                                                 lldb::addr_t *cmd_arg,
                                                 ClangUserExpression::ClangUserExpressionSP &user_expression_sp) :
-    ThreadPlanCallFunction (thread, function, arg, stop_other_threads, discard_on_error, this_arg, cmd_arg),
+    ThreadPlanCallFunction (thread, function, ClangASTType(), arg, stop_other_threads, discard_on_error, this_arg, cmd_arg),
     m_user_expression_sp (user_expression_sp)
 {
 }