Merge #10824: Avoid unnecessary work in SetNetworkActive

a2420ae Avoid unnecessary work in SetNetworkActive (João Barbosa)

Pull request description:

  This PR adds an early return to avoid unnecessary notifications when the status doesn't change.

Tree-SHA512: 85d05ca6fa36cb581f94bc154d08bd72cd53f6a857173c6fb2f184058f9c0208c4cf5e5d196825a78339902d8f256688eb6793f99abc7be9c7cfac85136180d9

src/net.cpp

@@ -2183,16 +2183,18 @@ void CConnman::SetNetworkActive(bool active)
 {
     LogPrint(BCLog::NET, "SetNetworkActive: %s\n", active);
 
-    if (!active) {
-        fNetworkActive = false;
+    if (fNetworkActive == active) {
+        return;
+    }
+
+    fNetworkActive = active;
 
+    if (!fNetworkActive) {
         LOCK(cs_vNodes);
         // Close sockets to all nodes
         for (CNode* pnode : vNodes) {
             pnode->CloseSocketDisconnect();
         }
-    } else {
-        fNetworkActive = true;
     }
 
     uiInterface.NotifyNetworkActiveChanged(fNetworkActive);