Don't use matches! on MessageVal tests.

This is a warning today, as in a future release of Rust this won't be legal to match on floating point values.

As these are C-style unions, there's no signal about what type they are and the matches! is behaving the same as just checking value directly (wouldn't fail to match if a mismatched type was written anyway).

PiperOrigin-RevId: 695488356

csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs

@@ -1,17 +0,0 @@
-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file or at
-// https://developers.google.com/open-source/licenses/bsd
-#endregion
-
-namespace Google.Protobuf.Reflection;
-
-internal sealed partial class FeatureSetDescriptor
-{
-    // Canonical serialized form of the edition defaults, generated by embed_edition_defaults.
-    private const string DefaultsBase64 =
-        "ChMYhAciACoMCAEQAhgCIAMoATACChMY5wciACoMCAIQARgBIAIoATABChMY6AciDAgBEAEYASACKAEwASoAIOYHKOgH";
-}

rust/upb/array.rs

@@ -57,11 +57,11 @@ mod tests {
             assert!(upb_Array_Append(array, upb_MessageValue { float_val: 7.0 }, raw_arena));
             assert!(upb_Array_Append(array, upb_MessageValue { float_val: 42.0 }, raw_arena));
             assert_eq!(upb_Array_Size(array), 2);
-            assert!(matches!(upb_Array_Get(array, 1), upb_MessageValue { float_val: 42.0 }));
+            assert_eq!(upb_Array_Get(array, 1).float_val, 42.0);
 
             assert!(upb_Array_Resize(array, 3, raw_arena));
             assert_eq!(upb_Array_Size(array), 3);
-            assert!(matches!(upb_Array_Get(array, 2), upb_MessageValue { float_val: 0.0 }));
+            assert_eq!(upb_Array_Get(array, 2).float_val, 0.0);
         }
     }
 }

rust/upb/map.rs

@@ -106,7 +106,7 @@ mod tests {
 
             let mut out = upb_MessageValue::zeroed();
             assert!(upb_Map_Get(map, upb_MessageValue { bool_val: true }, &mut out));
-            assert!(matches!(out, upb_MessageValue { double_val: 4.0 }));
+            assert_eq!(out.double_val, 4.0);
         }
     }
 }