Use snprintf rather than sprintf. From pvaldes.

git-svn-id: svn://svn.code.sf.net/p/bitchx/code/trunk@431 13b04d17-f746-0410-82c6-800466cd88b0

source/lastlog.c

@@ -465,7 +465,6 @@ BUILT_IN_COMMAND(lastlog)
 
 	if (match)
 	{
-
 		blah = (char *) alloca(strlen(match)+4);
 		sprintf(blah, "*%s*", match);
 	}
@@ -594,7 +593,7 @@ int logmsg(unsigned long log_type, char *from, int flag, char *format, ...)
 	{
 		va_list ap;
 		va_start(ap, format);
-		vsnprintf(msglog_buffer, BIG_BUFFER_SIZE, format, ap);
+		vsnprintf(msglog_buffer, sizeof msglog_buffer, format, ap);
 		va_end(ap);
 	}