Use md5.[ch]

@@ -11,7 +11,7 @@ SUBDIRS = include testsuite
 
 lib_LTLIBRARIES = libmailbox.la
 
-EXTRA_DIST = mbx_mboxscan.c md5-rsa.h
+EXTRA_DIST = mbx_mboxscan.c md5.h
 
 libmailbox_la_SOURCES = \
 address.c \
@@ -43,7 +43,7 @@ mbx_imap.c \
 mbx_mbox.c \
 mbx_mh.c \
 mbx_pop.c \
-md5-rsa.c \
+md5.c \
 message.c \
 memory_stream.c \
 mime.c \

@@ -38,7 +38,7 @@
 # include <strings.h>
 #endif
 
-#include <md5-rsa.h>
+#include <md5.h>
 
 #include <mailutils/attribute.h>
 #include <mailutils/auth.h>
@@ -756,7 +756,7 @@ pop_get_message (mailbox_t mbox, size_t msgno, message_t *pmsg)
   size_t i;
 
   /* Sanity.  */
-  if (pmsg == NULL || mpd == NULL)
+  if (pmsg == NULL || mpd == NULL || msgno > mpd->messages_count)
     return EINVAL;
 
   monitor_rdlock (mbox->monitor);

@@ -30,7 +30,7 @@
 #include <ctype.h>
 #include <pwd.h>
 
-#include "md5-rsa.h"
+#include "md5.h"
 
 #include <message0.h>