silence coverity#1421122 Uncaught exception

Change-Id: I371951b0e5a0f8c6fe796ff94dc60e07944c3f0f
Reviewed-on: https://gerrit.libreoffice.org/45758Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

test/source/vclbootstrapprotector.cxx

@@ -28,9 +28,18 @@ public:
 
 private:
     virtual ~Protector() override {
-        DeInitVCL();
-        // for the 6 tests that use it
-        comphelper::ThreadPool::getSharedOptimalPool().shutdown();
+#if defined(__COVERITY__)
+        try {
+#endif
+            DeInitVCL();
+            // for the 6 tests that use it
+            comphelper::ThreadPool::getSharedOptimalPool().shutdown();
+#if defined(__COVERITY__)
+        } catch (const std::exception& e) {
+            SAL_WARN("vcl.app", "Fatal exception: " << e.what());
+            std::terminate();
+        }
+#endif
     }
 
     virtual bool protect(