QMake: Fix generation of Visual Studio filter files

This amends commit a0a990863fa54b52db5e97716b130f69de47fa52.

We bailed out of writing the filter file if opening the file for writing
was successful. The condition must be flipped.

Change-Id: I24331c5374a25c5a1126c6f7f71d41d840e0e532
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/qmake/generators/win32/msbuild_objectmodel.cpp b/qmake/generators/win32/msbuild_objectmodel.cpp
index 3147f24961..9bbeed36ff 100644
--- a/qmake/generators/win32/msbuild_objectmodel.cpp
+++ b/qmake/generators/win32/msbuild_objectmodel.cpp
@@ -754,7 +754,7 @@ void VCXProjectWriter::write(XmlOutput &xml, VCProject &tool)
     // The file filters are added in a separate file for MSBUILD.
     QFile filterFile;
     filterFile.setFileName(Option::output.fileName().append(".filters"));
-    if (filterFile.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
+    if (!filterFile.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
         warn_msg(WarnLogic, "Cannot open output filter file");
         return;
     }