Fixing order of arguments in call to PyErr_GivenExceptionMatches in pybind11::error_already_set.matches

Author: YannickJadoul

include/pybind11/pytypes.h

@@ -344,7 +344,7 @@ class error_already_set : public std::runtime_error {
     /// Check if the currently trapped error type matches the given Python exception class (or a
     /// subclass thereof).  May also be passed a tuple to search for any exception class matches in
     /// the given tuple.
-    bool matches(handle ex) const { return PyErr_GivenExceptionMatches(ex.ptr(), m_type.ptr()); }
+    bool matches(handle exc) const { return PyErr_GivenExceptionMatches(m_type.ptr(), exc.ptr()); }
 
     const object& type() const { return m_type; }
     const object& value() const { return m_value; }