From cc1de9aa119f8e20d53d7e22acd565b22db56ea0 Mon Sep 17 00:00:00 2001
From: Antony Liu <sun_apollo@yeah.net>
Date: Wed, 13 Mar 2024 14:06:33 +0800
Subject: [PATCH] poi: bug 60288: remove defensive copy for internal
 relationships. Patch from Tim Helmstedt.

---
 openxml4Net/OPC/OPCPackage.cs  |  2 +-
 openxml4Net/OPC/PackagePart.cs | 13 +++----------
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/openxml4Net/OPC/OPCPackage.cs b/openxml4Net/OPC/OPCPackage.cs
index 2704f5305..327fb58e0 100644
--- a/openxml4Net/OPC/OPCPackage.cs
+++ b/openxml4Net/OPC/OPCPackage.cs
@@ -1548,7 +1548,7 @@ public bool HasRelationships
          */
         public bool IsRelationshipExists(PackageRelationship rel)
         {
-            foreach (PackageRelationship r in this.Relationships)
+            foreach (PackageRelationship r in relationships)
             {
                 if (r == rel)
                     return true;
diff --git a/openxml4Net/OPC/PackagePart.cs b/openxml4Net/OPC/PackagePart.cs
index 75b0463ba..9941ea20d 100644
--- a/openxml4Net/OPC/PackagePart.cs
+++ b/openxml4Net/OPC/PackagePart.cs
@@ -473,17 +473,10 @@ public bool HasRelationships
          */
         public bool IsRelationshipExists(PackageRelationship rel)
         {
-            try
+            foreach (PackageRelationship r in _relationships)
             {
-                foreach (PackageRelationship r in this.Relationships)
-                {
-                    if (r == rel)
-                        return true;
-                }
-            }
-            catch (InvalidFormatException)
-            { 
-            
+                if (r == rel)
+                    return true;
             }
             return false;
         }