Plugins: stop using QLatin1Char constructor for creating char literals

Required for porting away from QLatin1Char/QLatin1String in scope of
QTBUG-98434.

As a drive-by, fix qsizetype -> int narrowing conversion warnings for
the touched lines.

Change-Id: Id76add7e86b6dfb89f758a9efb0644067f0f44de
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp b/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
index 9d22f0b701..9ffd5fd496 100644
--- a/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
+++ b/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
@@ -521,7 +521,7 @@ void QGtk3FileDialogHelper::setNameFilters(const QStringList &filters)
 
     foreach (const QString &filter, filters) {
         GtkFileFilter *gtkFilter = gtk_file_filter_new();
-        const QString name = filter.left(filter.indexOf(QLatin1Char('(')));
+        const QString name = filter.left(filter.indexOf(u'('));
         const QStringList extensions = cleanFilterList(filter);
 
         gtk_file_filter_set_name(gtkFilter, qUtf8Printable(name.isEmpty() ? extensions.join(QLatin1String(", ")) : name));