Fix: sbbs_t::bulkupload(), e.g. initiated with the :UPLOAD sysop command would

set the "extended description" flag for all subsequently added files if one of
the files uploaded/added contained an embedded description (FILE_ID.DIZ)
causing garbage extended description display when viewing extended information
on files that did not in fact have an embedded description.

src/sbbs3/upload.cpp

@@ -8,7 +8,7 @@
  * @format.tab-size 4		(Plain Text/Source Code File Header)			*
  * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
  *																			*
- * Copyright 2015 Rob Swindell - http://www.synchro.net/copyright.html		*
+ * Copyright Rob Swindell - http://www.synchro.net/copyright.html			*
  *																			*
  * This program is free software; you can redistribute it and/or			*
  * modify it under the terms of the GNU General Public License				*
@@ -590,6 +590,7 @@ bool sbbs_t::bulkupload(uint dirnum)
 		padfname(getfname(spath),str);
 
 		if(findfile(&cfg,f.dir,str)==0) {
+			f.misc=0;
 			strcpy(f.name,str);
 			f.cdt=(long)flength(spath);
 			bprintf(text[BulkUploadDescPrompt],f.name,f.cdt/1024);