Fix chrono locale format bug for RHEL gcc

Fix #3858

Signed-off-by: Gao Mingfei <[email protected]>

Author: Gao Mingfei

include/fmt/chrono.h

@@ -399,7 +399,8 @@ auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc)
     // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and
     // gcc-4.
 #if FMT_MSC_VERSION != 0 || \
-    (defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI))
+    (defined(__GLIBCXX__) && \
+     (!defined(_GLIBCXX_USE_DUAL_ABI) || _GLIBCXX_USE_DUAL_ABI == 0))
     // The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5
     // and newer.
     using code_unit = wchar_t;