NEWS.adoc: revise a few recent fixes

Signed-off-by: Jim Klimov <jimklimov+nut@gmail.com>

Author: jimklimov

NEWS.adoc

@@ -107,7 +107,7 @@ https://github.com/networkupstools/nut/milestone/9
 
  - common driver code:
    * Update reports of failed socket file creation, to help troubleshooting
-     some error cases in the field.
+     some error cases in the field. [#2959]
    * Removed workarounds trying to migrate legacy driver raised `ALARM`
      status tokens into modern `alarm_*` function logic. Rather, we keep
      supporting them as separate from the modern logic, seeing as `upsmon`
@@ -120,6 +120,9 @@ https://github.com/networkupstools/nut/milestone/9
      change, operations that intend to turn off or restart the load, or can
      do that by side effect (e.g. calibration if batteries are old or dead),
      would explicitly `upslogx(LOG_CRIT,...)` by default before commencing.
+     [#2957]
+   * Fixed a couple of ancient memory leaks: one "shared" during driver
+     program initialization, and one specific to `dummy-ups` wind-down. [#2972]
 
  - `dummy-ups` driver updates:
    * A new instruction `ALARM` was added for the `Dummy Mode` operation