Minor improvements

app/src/main/java/exh/md/MangaDexLoginActivity.kt

@@ -4,7 +4,9 @@ import android.net.Uri
 import androidx.lifecycle.lifecycleScope
 import eu.kanade.tachiyomi.ui.setting.track.BaseOAuthLoginActivity
 import exh.md.utils.MdUtil
+import kotlinx.coroutines.flow.first
 import tachiyomi.core.common.util.lang.launchIO
+import tachiyomi.domain.source.service.SourceManager
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
 
@@ -14,11 +16,13 @@ class MangaDexLoginActivity : BaseOAuthLoginActivity() {
         val code = data?.getQueryParameter("code")
         if (code != null) {
             lifecycleScope.launchIO {
+                Injekt.get<SourceManager>().isInitialized.first { it }
                 MdUtil.getEnabledMangaDex(Injekt.get())?.login(code)
                 returnToSettings()
             }
         } else {
             lifecycleScope.launchIO {
+                Injekt.get<SourceManager>().isInitialized.first { it }
                 MdUtil.getEnabledMangaDex(Injekt.get())?.logout()
                 returnToSettings()
             }