Hopefully proper patch to solve "white" rendering issues

renderer/kdenlive_render.cpp

@@ -133,6 +133,7 @@ int main(int argc, char **argv)
         
         // older MLT version, does not support embedded consumer in/out in xml, and current 
         // MLT (6.16) does not pass it onto the multi / movit consumer, so read it manually and enforce
+        LocaleHandling::resetAllLocale();
         QFile f(playlist);
         QDomDocument doc;
         doc.setContent(&f, false);

src/lib/localeHandling.cpp

@@ -50,11 +50,11 @@ void LocaleHandling::resetLocale()
 void LocaleHandling::resetAllLocale()
 {
 #ifdef Q_OS_FREEBSD
-    setlocale(LC_ALL, "C");
+    setlocale(LC_ALL, "C.UTF-8");
 #else
-    std::setlocale(LC_ALL, "C");
+    std::setlocale(LC_ALL, "C.UTF-8");
 #endif
-    ::qputenv("LC_ALL", "C");
+    ::qputenv("LC_ALL", "C.UTF-8");
 }
 
 QPair<QLocale, LocaleHandling::MatchType> LocaleHandling::getQLocaleForDecimalPoint(const QString &requestedLocale, const QString &decimalPoint)