qbs build: Fix core lib's Export item

We overwrote the defines from QbsLibrary.qbs, breaking static builds.

Task-number: QBS-1230
Change-Id: Ia146e39f6278bf21c2415008c91520399065b20d
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/corelib/corelib.qbs b/src/lib/corelib/corelib.qbs
index 0b4c95f54..d3787e526 100644
--- a/src/lib/corelib/corelib.qbs
+++ b/src/lib/corelib/corelib.qbs
@@ -474,6 +474,6 @@ QbsLibrary {
     }
     Export {
         Depends { name: "cpp" }
-        cpp.defines: product.projectFileUpdateDefines
+        cpp.defines: base.concat(product.projectFileUpdateDefines)
     }
 }