server session DOC minor fixes
diff --git a/src/session_server.h b/src/session_server.h
index 7ed3f83..84dcdd9 100755
--- a/src/session_server.h
+++ b/src/session_server.h
@@ -224,7 +224,7 @@
* @brief Learn the number of sessions in a pollsession structure.
*
* @param[in] ps Pollsession structure to check.
- * @return Number of sessions (even invalid ones) in \p ps.
+ * @return Number of sessions (even invalid ones) in \p ps, -1 on error.
*/
uint16_t nc_ps_session_count(struct nc_pollsession *ps);
@@ -233,7 +233,7 @@
#define NC_PSPOLL_BAD_RPC 0x0004 /**< RPC was received, but failed to be parsed. */
#define NC_PSPOLL_REPLY_ERROR 0x0008 /**< Response to the RPC was a \<rpc-reply\> of type error. */
#define NC_PSPOLL_SESSION_TERM 0x0010 /**< Some session was terminated. */
-#define NC_PSPOLL_SESSION_ERROR 0x0020 /**< Some session was terminated incorrectly (not by \<close-session\> or \<kill-session\> RPCs. */
+#define NC_PSPOLL_SESSION_ERROR 0x0020 /**< Some session was terminated incorrectly (not by a \<close-session\> or \<kill-session\> RPC). */
#define NC_PSPOLL_PENDING 0x0040 /**< Unhandled pending events on other session. */
#define NC_PSPOLL_ERROR 0x0080 /**< Other fatal errors (they are printed). */