Fix visibility on Exception.InnerExceptionPrefix (#25278)

diff --git a/src/System.Private.CoreLib/shared/System/Exception.cs b/src/System.Private.CoreLib/shared/System/Exception.cs
index 30b808d..cb13645 100644 (file)
--- a/src/System.Private.CoreLib/shared/System/Exception.cs
+++ b/src/System.Private.CoreLib/shared/System/Exception.cs
@@ -11,7 +11,7 @@ namespace System
     [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial class Exception : ISerializable
     {
-        internal protected const string InnerExceptionPrefix = " ---> ";
+        private protected const string InnerExceptionPrefix = " ---> ";
 
         public Exception()
         {