Add missing include header

Change-Id: I59d6f1401cdfc37c0949cc9d439cb7ff52857079
Reviewed-on: https://gerrit.libreoffice.org/13286Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>

basic/source/runtime/dllmgr-x64.cxx

@@ -33,6 +33,7 @@
 #include <basic/sbx.hxx>
 #include <basic/sbxvar.hxx>
 #include <osl/thread.h>
+#include <osl/diagnose.h>
 #include <rtl/ref.hxx>
 #include <rtl/string.hxx>
 #include <rtl/ustring.hxx>