debug session (2x)

- MariadbSessionStorage not found error fix.

webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/MariadbSessionStorage.kt

@@ -25,9 +25,10 @@ class MariadbSessionStorage: SessionStorage {
     }
 
     override suspend fun write(id: String, value: String) {
+        return transaction {
             val session = Session.find(SessionTable.key eq id).firstOrNull()
 
-        if(session == null) {
+            if (session == null) {
                 Session.new {
                     this.key = id
                     this.value = value
@@ -36,4 +37,5 @@ class MariadbSessionStorage: SessionStorage {
                 session.value = value
             }
         }
+    }
 }