Flush wcout before exiting the app

Apparently not flushing caused the output to be truncated on
some windows machines when redirecting to a file.

Task-number: QTBUG-67860
Change-Id: I82a49286114dcb4dd1f264153363999ec81edd6f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/qtdiag/main.cpp b/src/qtdiag/main.cpp
index 2f5e2e9ee..de56d7201 100644
--- a/src/qtdiag/main.cpp
+++ b/src/qtdiag/main.cpp
@@ -66,5 +66,6 @@ int main(int argc, char **argv)
         flags |= QtDiagVk;
 
     std::wcout << qtDiag(flags).toStdWString();
+    std::wcout.flush();
     return 0;
 }