Address PR feedback

src/mono/mono/metadata/class-init.c

@@ -4255,9 +4255,9 @@ build_variance_search_table_inner (MonoClass *klass, MonoClass **buf, int buf_si
 static void
 build_variance_search_table (MonoClass *klass) {
 	// FIXME: Is there a way to deterministically compute the right capacity?
-	int buf_size = 512, buf_count = 0;
-	MonoClass **buf = g_alloca (buf_size * sizeof(MonoClass *)),
-		**result = NULL;
+	int buf_size = m_class_get_interface_offsets_count (klass), buf_count = 0;
+	MonoClass **buf = g_alloca (buf_size * sizeof(MonoClass *));
+	MonoClass **result = NULL;
 	memset (buf, 0, buf_size * sizeof(MonoClass *));
 	build_variance_search_table_inner (klass, buf, buf_size, &buf_count, klass);
 

src/mono/mono/metadata/class-internals.h

@@ -1465,6 +1465,9 @@ mono_class_has_default_constructor (MonoClass *klass, gboolean public_only);
 gboolean
 mono_method_has_unmanaged_callers_only_attribute (MonoMethod *method);
 
+void
+mono_class_get_variance_search_table (MonoClass *klass, MonoClass ***table, int *table_size);
+
 // There are many ways to do on-demand initialization.
 //   Some allow multiple concurrent initializations. Some do not.
 //   Some allow multiple concurrent writes to the global. Some do not.

src/native/public/mono/metadata/details/class-functions.h

@@ -131,8 +131,6 @@ MONO_API_FUNCTION(MONO_RT_EXTERNAL_ONLY mono_bool, mono_class_is_delegate, (Mono
 
 MONO_API_FUNCTION(MONO_RT_EXTERNAL_ONLY mono_bool, mono_class_implements_interface, (MonoClass* klass, MonoClass* iface))
 
-MONO_API_FUNCTION(void, mono_class_get_variance_search_table, (MonoClass *klass, MonoClass ***table, int *table_size));
-
 /* MonoClassField accessors */
 MONO_API_FUNCTION(const char*, mono_field_get_name, (MonoClassField *field))
 

src/tests/Regressions/coreclr/103365/103365.cs

@@ -3,7 +3,7 @@
 
 /*
 https://github.com/dotnet/runtime/issues/103365
-When using an interface with a generic out type, an explicit implementation, and a derived class, the base classes implementation is called instead of the derived class when running on Android. Running on Windows yields the expected behavior.
+When using an interface with a generic out type, an explicit implementation, and a derived class, the base classes implementation is called instead of the derived class when running on Mono; CoreCLR has the expected behavior.
 */
 
 using System;