Add missing mc report message type to header

The type 30010 was not defined in the header file; it now is.

Issue-ID: RIC-334

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I9cbf576ac04d134f2d8e40c634fe0bc332125735
diff --git a/CHANGES_CORE.txt b/CHANGES_CORE.txt
index 9500781..80f7e61 100644
--- a/CHANGES_CORE.txt
+++ b/CHANGES_CORE.txt
@@ -5,6 +5,9 @@
 # API and build change  and fix summaries. Doc correctsions
 # and/or changes are not mentioned here; see the commit messages.
 
+2020 April 15; version 3.7.4
+	Add missing message type to header file (RIC-334)
+
 2020 April 14; version 3.7.3
 	Fix bug in rmr_call() when using SI95  (RIC-333)