[compat] fix solaris Qt build (#194)

Co-authored-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/194
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

src/core/internal_network/sockets.h

@@ -9,7 +9,11 @@
 #include <utility>
 
 #if defined(_WIN32)
-#elif !YUZU_UNIX
+// windows
+#elif defined(__unix__)
+// unix
+#else
+// haiku
 #error "Platform not implemented"
 #endif
 
@@ -24,7 +28,7 @@ struct ProxyPacket;
 
 class SocketBase {
 public:
-#ifdef YUZU_UNIX
+#ifdef __unix__
     using SOCKET = int;
     static constexpr SOCKET INVALID_SOCKET = -1;
     static constexpr SOCKET SOCKET_ERROR = -1;