[PATCH] tiny patch for mwm.h

[Art Haas]

Sorry I'm posting here - I've been unable to connect to Sourceforge ...

The GCC snapshots don't like `#Error' - on lines 459-461 of

`clients/Motif*/mwm/mwm.h' change

#else
# Error You lose
#endif

to

#else
# error You lose
#endif

and the compiler/preprocessor is happy.

Thanks for your work on lesstif.

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# Art Haas
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