LibCore: Make FreeBSD build SerenityOS

Author: https://github.com/iah
Commit: 41765895a8
Pull-request: https://github.com/SerenityOS/serenity/pull/12521
Reviewed-by: https://github.com/MaxWipfli ✅
Reviewed-by: https://github.com/linusg
Reviewed-by: https://github.com/nico
Reviewed-by: https://github.com/trflynn89

Userland/Libraries/LibCore/DateTime.cpp

@@ -106,7 +106,11 @@ String DateTime::to_string(StringView format) const
     const int format_len = format.length();
 
     auto format_time_zone_offset = [&](bool with_separator) {
+#ifndef __FreeBSD__
         auto offset_seconds = -timezone;
+#else
+        auto offset_seconds = 0;
+#endif
         StringView offset_sign;
 
         if (offset_seconds >= 0) {

Userland/Libraries/LibCore/Stream.cpp

@@ -17,6 +17,9 @@
 #ifdef __serenity__
 #    include <serenity.h>
 #endif
+#ifdef __FreeBSD__
+#    include <sys/ucred.h>
+#endif
 
 namespace Core::Stream {