Refine code style

mobile/src/main/java/be/mygod/vpnhotspot/RepeaterService.kt

@@ -85,7 +85,7 @@ class RepeaterService : Service(), WifiP2pManager.ChannelListener, VpnMonitor.Ca
                         else -> Log.w(TAG, "Unexpected groups: $it")
                     }
                 })
-            } catch (e: Exception) {
+            } catch (e: ReflectiveOperationException) {
                 e.printStackTrace()
                 Toast.makeText(this@RepeaterService, e.message, Toast.LENGTH_LONG).show()
             }

mobile/src/main/java/be/mygod/vpnhotspot/TetheringFragment.kt

@@ -179,13 +179,12 @@ class TetheringFragment : Fragment(), ServiceConnection {
         /**
          * Based on: https://android.googlesource.com/platform/packages/apps/Settings/+/78d5efd/src/com/android/settings/TetherSettings.java
          */
-        fun isStarted(type: TetherType, enabledTypes: Set<TetherType> = this.enabledTypes): Boolean {
-            return if (type == TetherType.BLUETOOTH) {
-                val pan = pan
-                BluetoothAdapter.getDefaultAdapter()?.state == BluetoothAdapter.STATE_ON && pan != null &&
-                        isTetheringOn.invoke(pan) as Boolean
-            } else enabledTypes.contains(type)
-        }
+        fun isStarted(type: TetherType, enabledTypes: Set<TetherType> = this.enabledTypes) =
+                if (type == TetherType.BLUETOOTH) {
+                    val pan = pan
+                    BluetoothAdapter.getDefaultAdapter()?.state == BluetoothAdapter.STATE_ON && pan != null &&
+                            isTetheringOn.invoke(pan) as Boolean
+                } else enabledTypes.contains(type)
     }
     class TetheredInterface(val name: String, lookup: Map<String, NetworkInterface>) : Comparable<TetheredInterface> {
         val addresses = lookup[name]?.formatAddresses() ?: ""

mobile/src/main/java/be/mygod/vpnhotspot/net/VpnMonitor.kt

@@ -1,6 +1,5 @@
 package be.mygod.vpnhotspot.net
 
-import android.content.Context
 import android.net.ConnectivityManager
 import android.net.Network
 import android.net.NetworkCapabilities

mobile/src/main/java/be/mygod/vpnhotspot/net/wifi/P2pSupplicantConfiguration.kt

@@ -22,7 +22,7 @@ class P2pSupplicantConfiguration {
     fun readPsk(): String? {
         return try {
             pskParser.findAll(content ?: return null).single().groupValues[1]
-        } catch (e: Exception) {
+        } catch (e: RuntimeException) {
             Log.w(TAG, content)
             e.printStackTrace()
             Toast.makeText(app, e.message, Toast.LENGTH_LONG).show()