QCryptographicHash: clear the result in QCH::reset() when using OpenSSL

OpenSSL implementation did not clear the previous result when
calling QCH::reset(). This could lead to not generating new hashes.

Change-Id: Ic83e6382038a2f8808af950b88e57316b90ef2bc
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
(cherry picked from commit 1fe74c3bd3f727551b8168ee9f3e642d42233d55)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/corelib/tools/qcryptographichash.cpp

@@ -560,8 +560,8 @@ void QCryptographicHashPrivate::reset() noexcept
         break;
 #endif
     }
-    result.clear();
 #endif // !QT_CONFIG(opensslv30)
+    result.clear();
 }
 
 #if QT_DEPRECATED_SINCE(6, 4)