Expressions with parentheses inside template arguments break parsing #2327

Expressions containing parentheses (e.g. sizeof(), static_cast<>()) inside template argument lists cause the class to be misparsed.

  $ echo "class Foo : public std::array<int, sizeof(int)> {};" | srcml --language C++

  <class_decl>class <name>Foo</name>
    <super_list>: <super><specifier>public</specifier>
      <name><name>std</name><operator>::</operator><name>array</name></name>
      <argument_list type="generic">&lt;<argument><expr><name>int</name></expr></argument>,</argument_list>
    </super></super_list> sizeof(int
  </class_decl>)<expr_stmt><expr><operator>&gt;</operator> <block>{}</block></expr>;</expr_stmt>

The <argument_list> closes after int,. The second template argument (sizeof(int)) becomes raw text inside <class_decl>, and > {}; becomes a separate <expr_stmt>.

Same issue with all *_cast<>() expressions:

class Foo : public std::array<int, static_cast<size_t>(4)> {}; // broken
class Foo : public std::array<int, (size_t)4> {}; // OK
class Foo : public std::array<int, 4> {}; // OK