From 410e6651401b55aa581f5e82ad287cba7826787b Mon Sep 17 00:00:00 2001
From: deirn <foreirn@gmail.com>
Date: Fri, 6 Aug 2021 16:16:42 +0700
Subject: [PATCH] fix #99 crash

---
 .../badasintended/slotlink/screen/RequestScreenHandler.kt | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/main/kotlin/badasintended/slotlink/screen/RequestScreenHandler.kt b/src/main/kotlin/badasintended/slotlink/screen/RequestScreenHandler.kt
index fce9927..b711f50 100644
--- a/src/main/kotlin/badasintended/slotlink/screen/RequestScreenHandler.kt
+++ b/src/main/kotlin/badasintended/slotlink/screen/RequestScreenHandler.kt
@@ -510,9 +510,11 @@ open class RequestScreenHandler(
                     resort = true
                     view.update(stack)
                 } else if (view.count != stack.count) {
-                    val filled = filledStacks.first { view.isItemAndTagEqual(it) }
-                    filled.count -= view.count - stack.count
-                    view.update(stack)
+                    val filled = filledStacks.firstOrNull { view.isItemAndTagEqual(it) }
+                    if (filled != null) {
+                        filled.count -= view.count - stack.count
+                        view.update(stack)
+                    }
                 }
             }
         }