Prevent garbage from being saved in the userid field

It seems that in some scenarios we end up with a string that isn't NUL
terminated and that results in garbage being stored as userid. This patch
is a little brute force but it fixes the problem even if a previous
version os Subsurface ended up adding other text to the end of the userid.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/dive.c b/dive.c
index 56c0de0ec..78ad25532 100644
--- a/dive.c
+++ b/dive.c
@@ -2720,6 +2720,8 @@ void set_save_userid_local(short value)
 void set_userid(char *rUserId)
 {
 	prefs.userid = strdup(rUserId);
+	if (strlen(prefs.userid) > 30)
+		prefs.userid[30]='\0';
 }
 
 int average_depth(struct diveplan *dive)