fix crash in EditProfileActivity

app/src/main/java/com/keylesspalace/tusky/EditProfileActivity.kt

@@ -59,6 +59,8 @@ class EditProfileActivity : BaseActivity(), Injectable {
         private const val HEADER_PICK_RESULT = 2
         private const val PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 1
         private const val MAX_ACCOUNT_FIELDS = 4
+
+        private const val BUNDLE_CURRENTLY_PICKING = "BUNDLE_CURRENTLY_PICKING"
     }
 
     @Inject
@@ -78,6 +80,11 @@ class EditProfileActivity : BaseActivity(), Injectable {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+
+        savedInstanceState?.getString(BUNDLE_CURRENTLY_PICKING)?.let {
+            currentlyPicking = PickType.valueOf(it)
+        }
+
         setContentView(R.layout.activity_edit_profile)
 
         viewModel = ViewModelProviders.of(this, viewModelFactory)[EditProfileViewModel::class.java]
@@ -170,6 +177,11 @@ class EditProfileActivity : BaseActivity(), Injectable {
 
     }
 
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putString(BUNDLE_CURRENTLY_PICKING, currentlyPicking.toString())
+    }
+
     override fun onStop() {
         super.onStop()
         if(!isFinishing) {