fixup for re-est: do not succeed on acceptance fail

Fix a bug introduced in commit
 implement CM Re-Establish for voice calls
 ae98b97382285420ba81549bc874b9fea5e7daa9
 Neels Hofmeyr <neels@hofmeyr.de>
 Thu Jul 29 22:40:59 2021 +0200
 I6fa37d6ca9fcb1637742b40e37b68d67664c9b60

We should only succeed when conn_accepted == true!

Related: SYS#5130
Change-Id: I3679162143e8d7d8c0878de2102faa11eadfccfc
---
M src/libmsc/msc_a.c
1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index 70d9bf7..db1d998 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -182,7 +182,7 @@
 	if (msc_a->complete_layer3_type == COMPLETE_LAYER3_LU)
 		msc_a_put(msc_a, MSC_A_USE_LOCATION_UPDATING);
 
-	if (msc_a->complete_layer3_type == COMPLETE_LAYER3_CM_RE_ESTABLISH_REQ) {
+	if (conn_accepted && msc_a->complete_layer3_type == COMPLETE_LAYER3_CM_RE_ESTABLISH_REQ) {
 		/* Trigger new Assignment to recommence the voice call. A little dance here because normally we verify
 		 * that no CC trans is already active. */
 		struct gsm_trans *cc_trans = msc_a->cc.active_trans;

