unzip.cpp: Fix wrong open mode

By default, std::ofstream objects are opened under the std::ios::out
mode, equivalent to "r" mode in fopen(3), which has non-portable
behaviour. [1]

In order to avoid non-portable behaviour, std::ios::binary must be used
instead, equivalent to "rb" mode in fopen(3).

[1]: https://en.cppreference.com/w/cpp/io/basic_ofstream/basic_ofstream

src/modules/userinterface/legacymenu/mainscreens/unzip.cpp

@@ -65,7 +65,7 @@ end:
 
 int unzip::extract(const std::string &path) const
 {
-    std::ofstream out(path);
+    std::ofstream out(path, std::ios::binary);
     int ret = -1, error = unzOpenCurrentFile(f);
 
     if (error)