message: Fix incorrect assertion usage.
diff: @@ -960,7 +960,7 @@ class RustGenerator : public BaseGenerator {
  field.IsRequired() ? "\"\"" : "\"" + field.value.constant + "\"";
  if (context == kObject) return defval + ".to_string()";
  if (context == kAccessor) return "&" + defval;
  - FLATBUFFERS_ASSERT("Unreachable.");
  + FLATBUFFERS_ASSERT(false);
  return "INVALID_CODE_GENERATION";
  }
  @@ -986,7 +986,7 @@ class RustGenerator : public BaseGenerator {
  return "Default::default()";
  }
  }
  - FLATBUFFERS_ASSERT("Unreachable.");
  + FLATBUFFERS_ASSERT(false);
  return "INVALID_CODE_GENERATION";
  }
  