segfault with style in CheckClass::operatorEqRetRefThis()

[aggro80]

class szp
{
  szp &operator =(int *other) {};
};

int main()
{}

$ ./cppcheck p.cpp --enable=style
Checking p.cpp...
Segmentation fault

==29594== Invalid read of size 4
==29594==    at 0x40D6B15: std::string::compare(char const*) const (in /usr/lib/libstdc++.so.6.0.10)
==29594==    by 0x8054C29: bool std::operator==<char, std::char_traits<char>, std::allocator<char> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, char const*) (basic_string.h:2189)
==29594==    by 0x805FF5E: CheckClass::operatorEqRetRefThis() (checkclass.cpp:937)
==29594==    by 0x8062F5E: CheckClass::runSimplifiedChecks(Tokenizer const*, Settings const*, ErrorLogger*) (checkclass.h:61)
==29594==    by 0x808F323: CppCheck::checkFile(std::string const&, char const*) (cppcheck.cpp:615)
==29594==    by 0x8090549: CppCheck::check() (cppcheck.cpp:522)
==29594==    by 0x804B977: CppCheckExecutor::check(int, char const* const*) (cppcheckexecutor.cpp:60)
==29594==    by 0x804EB6C: main (main.cpp:97)
==29594==  Address 0x4 is not stack'd, malloc'd or (recently) free'd

Found from:
http://downloads.sourceforge.net/odamex/odamex-src-0.4.4.tar.bz2
From file: common/d_dehacked.cpp

[robertreif]

Here is a patch that fixes this problem.

[hyd_danmar]

I applied 1323.diff with:
http://github.com/danmar/cppcheck/commit/94c5d92b2b26a037e5ab9add7103ae5ddc6b59a2