Fix "Add Files" functionality.

This was broken for the case of a product with no existing binding, even
accessing a null pointer. This is also covered by the autotest now.

Change-Id: I088dbac08627b08f903dbe77bd824997592adb09
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/auto/api/testdata/project-editing/project-with-no-files.qbs b/tests/auto/api/testdata/project-editing/project-with-no-files.qbs
new file mode 100644
index 000000000..824ae6dcd
--- /dev/null
+++ b/tests/auto/api/testdata/project-editing/project-with-no-files.qbs
@@ -0,0 +1,7 @@
+import qbs
+
+CppApplication {
+    Group {
+        files: "file.cpp"
+    }
+}