Fix this warning:
RFCTransport.C: In function 'long unsigned int writeToFileDesc(const char*, int,
__va_list_tag*)':
RFCTransport.C:91: warning: 'DtMailBoolean' is promoted to 'int' when passed thr
ough '...'
RFCTransport.C:91: warning: (so you should pass 'int' not 'DtMailBoolean' to 'va
_arg')
RFCTransport.C:91: note: if this code is reached, the program will abort