Merge pull request #61 from tomoakiichige/fix/client-keep-alive-always-check

Ensure keep alive check runs continuously in MQTTClient#check()

kmqtt-client/src/commonMain/kotlin/MQTTClient.kt

@@ -369,7 +369,8 @@ public class MQTTClient(
                 onDisconnected(null)
                 throw e
             }
-        } else {
+        }
+
         // If connack not received in a reasonable amount of time, then disconnect
         val currentTime = currentTimeMillis()
         val lastActive = lastActiveTimestamp.value
@@ -399,7 +400,6 @@ public class MQTTClient(
             }
         }
     }
-    }
 
     /**
      * Run a single iteration of the client (blocking)