Fix linking of the core plugin on Windows.

DestroyIcon needs user32.dll.

Introduced by e0f16c3093 .

Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Daniel Molkentin <daniel.molkentin@nokia.com>
(cherry picked from commit 506df46f0b)

Change-Id: I11075c9cb911af403cb5ded74437c5a785fb768c
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Daniel Molkentin <daniel.molkentin@nokia.com>

src/plugins/coreplugin/coreplugin.pro

@@ -210,7 +210,7 @@ RESOURCES += core.qrc \
 
 win32 {
     SOURCES += progressmanager/progressmanager_win.cpp
-    LIBS += -lole32
+    LIBS += -lole32 -luser32
 }
 else:macx {
     OBJECTIVE_SOURCES += progressmanager/progressmanager_mac.mm

src/plugins/coreplugin/coreplugin.qbs

@@ -24,8 +24,9 @@ QtcPlugin {
     ]
 
     cpp.dynamicLibraries: {
-        if (qbs.targetOS == 'windows') return [
-            "ole32"
+        if (qbs.targetOS == "windows") return [
+            "ole32",
+            "user32"
         ]
     }