(issuid): add

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@5061 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/roken/roken.h.in

@@ -320,6 +320,8 @@ int roken_vconcat (char *s, size_t len, va_list args);
 
 size_t roken_vmconcat (char **s, size_t max_len, va_list args);
 
+int issuid(void);
+
 #ifndef HAVE_STRUCT_WINSIZE
 struct winsize {
 	unsigned short ws_row, ws_col;