QGuiApplication: properly decode path command-line arguments

Using QFile::decodeName, not QString::fromLocal8Bit.

Pick-to: 6.2
Change-Id: Ice04365c72984d07a64dfffd16b47dcbfee23341
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index b63ed75f65..c9fbc301af 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -1445,7 +1445,7 @@ void QGuiApplicationPrivate::createPlatformIntegration()
             ++arg;
         if (strcmp(arg, "-platformpluginpath") == 0) {
             if (++i < argc)
-                platformPluginPath = QString::fromLocal8Bit(argv[i]);
+                platformPluginPath = QFile::decodeName(argv[i]);
         } else if (strcmp(arg, "-platform") == 0) {
             if (++i < argc) {
                 platformExplicitlySelected = true;
@@ -1462,7 +1462,7 @@ void QGuiApplicationPrivate::createPlatformIntegration()
                 firstWindowTitle = QString::fromLocal8Bit(argv[i]);
         } else if (strcmp(arg, "-qwindowicon") == 0 || (xcbIsDefault && strcmp(arg, "-icon") == 0)) {
             if (++i < argc) {
-                icon = QString::fromLocal8Bit(argv[i]);
+                icon = QFile::decodeName(argv[i]);
             }
         } else {
             argv[j++] = argv[i];