Fix 'devices' example to build with MinGW

src/gui/kernel/qwindowdefs.h #defines
main to qMain and qtentrypoint_win.cpp expects qMain
to have 2 parameters in its signature: argc and argv.

The 'devices' example was missing the parameters, which caused the app
to fail at link time with

  qtentrypoint_win.cpp:97: undefined reference to `qMain(int, char**)'

Add the parameters to the example signature.

Pick-to: 6.2
Task-number: COIN-762
Change-Id: I8baa4e84abf4c08f462f041a30d261023282a0b9
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 4 insertions, 1 deletions

diff --git a/examples/multimedia/devices/main.cpp b/examples/multimedia/devices/main.cpp
index a07e7c468..79c1afb25 100644
--- a/examples/multimedia/devices/main.cpp
+++ b/examples/multimedia/devices/main.cpp
@@ -156,8 +156,11 @@ void printVideoDeviceInfo(QTextStream &out, const QCameraDevice &cameraDevice)
 
 }
 
-int main()
+
+int main(int argc, char *argv[])
 {
+    Q_UNUSED(argc);
+    Q_UNUSED(argv);
     QTextStream out(stdout);
 
     const auto audioInputDevices = QMediaDevices::audioInputs();