Fix hangup only if any call is running

Author: artemkrachulov

MatrixSDK/VoIP/MXCallManager.m

@@ -491,10 +491,19 @@ - (void)handleCallInvite:(MXEvent *)event
             if (call)
             {
 
-                if (_callKitAdapter.maximumActiveCalls != -1 && calls.count >= _callKitAdapter.maximumActiveCalls) {
+                BOOL isOngoing = FALSE;
+                NSUInteger* runningCalls = 0;
 
-                  [call hangupWithReason: MXCallHangupReasonUserBusy];
+                for (MXCall *call in calls) {
+                  if (call.state <= MXCallStateConnected) {
+                    runningCalls += 1;
+                  }
+                }
 
+                if (_callKitAdapter.maximumActiveCalls != -1 && runningCalls >= _callKitAdapter.maximumActiveCalls) {
+                  
+                  [call hangupWithReason: MXCallHangupReasonUserBusy];
+                  
                   return;
                 }