UUM-79025 - Added case for MONO_TYPE_FNPTR to

mono_field_get_value_object_checked to set error instead of crash

Author: PatrickSycz

mono/metadata/object.c

@@ -3676,6 +3676,10 @@ mono_field_get_value_object_checked (MonoDomain *domain, MonoClassField *field,
 	case MONO_TYPE_PTR:
 		is_ptr = TRUE;
 		break;
+	case MONO_TYPE_FNPTR:
+		mono_error_set_error(error, MONO_ERROR_ARGUMENT, "Cannot get value of a function pointer field");
+		goto return_null;
+
 	default:
 		g_error ("type 0x%x not handled in "
 			 "mono_field_get_value_object", type->type);