meson: Add msvc compat args to util/tests

To keep this building with msvc

Acked-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Kristian H. Kristensen <hoegsberg@google.com>

src/util/tests/string_buffer/meson.build

@@ -23,6 +23,7 @@ test(
   executable(
     'string_buffer_test',
     'string_buffer_test.cpp',
+    cpp_args : [cpp_msvc_compat_args],
     dependencies : [idep_gtest, idep_mesautil],
     include_directories : inc_common,
   ),