Disable patch when _vespa_llvm_version is not defined.
@@ -492,7 +492,7 @@ nearest neighbor search used for low-level benchmarking.
%endif
%else
%setup -q
-%if 0%{?el8} && %{_vespa_llvm_version} < 13
+%if 0%{?el8} && %{?_vespa_llvm_version}%{!?_vespa_llvm_version:13} < 13
if grep -qs 'result_pair<R>(' /usr/include/llvm/ADT/STLExtras.h
then
patch /usr/include/llvm/ADT/STLExtras.h < dist/STLExtras.h.diff
