Merged revisions 218730 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r218730 | tilghman | 2009-09-15 17:27:41 -0500 (Tue, 15 Sep 2009) | 6 lines
  
  If the user enters the same password as before, don't signal an error when the change does nothing.
  (closes issue #15492)
   Reported by: cbbs70a
   Patches: 
         20090713__issue15492.diff.txt uploaded by tilghman (license 14)
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@218731 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -1068,28 +1068,27 @@ static int check_password(struct ast_vm_user *vmu, char *password)
  * \param vmu The voicemail user to change the password for.
  * \param password The new value to be set to the password for this user.
  * 
- * This only works if the voicemail user has a unique id, and if there is a realtime engine configured.
+ * This only works if there is a realtime engine configured.
  * This is called from the (top level) vm_change_password.
  *
  * \return zero on success, -1 on error.
  */
 static int change_password_realtime(struct ast_vm_user *vmu, const char *password)
 {
-	int res;
-	if (!ast_strlen_zero(vmu->uniqueid)) {
-		if (strlen(password) > 10) {
-			ast_realtime_require_field("voicemail", "password", RQ_CHAR, strlen(password), SENTINEL);
-		}
-		res = ast_update2_realtime("voicemail", "context", vmu->context, "mailbox", vmu->mailbox, SENTINEL, "password", password, SENTINEL);
-		if (res > 0) {
-			ast_copy_string(vmu->password, password, sizeof(vmu->password));
-			res = 0;
-		} else if (!res) {
-			res = -1;
-		}
-		return res;
+	int res = -1;
+	if (!strcmp(vmu->password, password)) {
+		/* No change (but an update would return 0 rows updated, so we opt out here) */
+		return 0;
 	}
-	return -1;
+
+	if (strlen(password) > 10) {
+		ast_realtime_require_field("voicemail", "password", RQ_CHAR, strlen(password), SENTINEL);
+	}
+	if (ast_update2_realtime("voicemail", "context", vmu->context, "mailbox", vmu->mailbox, SENTINEL, "password", password, SENTINEL) > 0) {
+		ast_copy_string(vmu->password, password, sizeof(vmu->password));
+		res = 0;
+	}
+	return res;
 }
 
 /*!