userblocklist: fix function comment, related to gh #3102

(cherry picked from commit a21c929a389c6e5f85e9166d01adb0d474c6ebaf)

src/modules/userblocklist/db_userblocklist.c

@@ -61,7 +61,7 @@ void userblocklist_db_close(void) {
 
 
 /*!
- * Initialises the DB API, check the table version and closes the connection.
+ * Initialises the DB API and check the table version.
  * This should be called from the mod_init function.
  *
  * \return 0 means ok, -1 means an error occurred.