Mojom frontend: Correctly handle empty structs in computeVersionInfo()

mojo/dart/packages/_mojo_for_test_only/lib/regression_tests/regression_tests.mojom.dart

Index: mojo/dart/packages/_mojo_for_test_only/lib/regression_tests/regression_tests.mojom.dart
diff --git a/mojo/dart/packages/_mojo_for_test_only/lib/regression_tests/regression_tests.mojom.dart b/mojo/dart/packages/_mojo_for_test_only/lib/regression_tests/regression_tests.mojom.dart
index 2e46cb5112297547ab3c56a761421b706ecde661..4d91c3482278df3262742b0363a8f42cb214a12c 100644
--- a/mojo/dart/packages/_mojo_for_test_only/lib/regression_tests/regression_tests.mojom.dart
+++ b/mojo/dart/packages/_mojo_for_test_only/lib/regression_tests/regression_tests.mojom.dart
@@ -3292,7 +3292,7 @@ mojom_types.RuntimeTypeInfo  _initRuntimeTypeInfo() {
   // serializedRuntimeTypeInfo contains the bytes of the Mojo serialization of
   // a mojom_types.RuntimeTypeInfo struct describing the Mojom types in this
   // file. The string contains the base64 encoding of the gzip-compressed bytes.
-  var serializedRuntimeTypeInfo = "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";
+  var serializedRuntimeTypeInfo = "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";
 
   // Deserialize RuntimeTypeInfo
   var bytes = BASE64.decode(serializedRuntimeTypeInfo);