QWindowsFormatInfo: avoid implicit detach in getImageFormatList()

by making a variable const

Change-Id: I54bd46e1dfe2ffd1d17ae80d258b78981dcedf36
Reviewed-by: Artem Dyomin <artem.dyomin@qt.io>
Reviewed-by: Jøger Hansegård <joger.hansegard@qt.io>
(cherry picked from commit 6cfcbfbdf698dd843d764cf0387dcd2dc744b1b6)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit eb4e3b087aceb615c199ef9e7bf05a29f4345037)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/plugins/multimedia/windows/qwindowsformatinfo.cpp b/src/plugins/multimedia/windows/qwindowsformatinfo.cpp
index d947a1f9e..6ef1f7f7f 100644
--- a/src/plugins/multimedia/windows/qwindowsformatinfo.cpp
+++ b/src/plugins/multimedia/windows/qwindowsformatinfo.cpp
@@ -79,7 +79,7 @@ bool isSupportedCodec(T codec, QMediaFormat::ConversionMode m, CheckedCodecs<T>
 static QList<QImageCapture::FileFormat> getImageFormatList()
 {
     QList<QImageCapture::FileFormat> list;
-    auto formats = QImageWriter::supportedImageFormats();
+    const auto formats = QImageWriter::supportedImageFormats();
 
     for (const auto &f : formats) {
         auto format = QString::fromUtf8(f);