Added multiple-inclusion protection.

src/sbbs3/ftpsrvr.h

@@ -35,6 +35,9 @@
  * Note: If this box doesn't appear square, then you need to fix your tabs.	*
  ****************************************************************************/
 
+#ifndef _FTPSRVR_H_
+#define _FTPSRVR_H_
+
 #include "client.h"				/* client_t */
 
 typedef struct {
@@ -132,4 +135,6 @@ DLLEXPORT void	DLLCALL ftp_terminate(void);
 DLLEXPORT char*	DLLCALL ftp_ver(void);
 #ifdef __cplusplus
 }
-#endif
+#endif
\ No newline at end of file
+
+#endif /* Don't add anything after this line */
\ No newline at end of file

src/sbbs3/mailsrvr.h

@@ -35,6 +35,9 @@
  * Note: If this box doesn't appear square, then you need to fix your tabs.	*
  ****************************************************************************/
 
+#ifndef _MAILSRVR_H_
+#define _MAILSRVR_H_
+
 #include "client.h"				/* client_t */
 
 typedef struct {
@@ -136,4 +139,6 @@ DLLEXPORT void	DLLCALL mail_terminate(void);
 DLLEXPORT char*	DLLCALL mail_ver(void);
 #ifdef __cplusplus
 }
-#endif
+#endif
\ No newline at end of file
+
+#endif /* Don't add anything after this line */
\ No newline at end of file