Disable leak checks for some tests that intentionally leak (#6997)

fdbclient/MultiVersionTransaction.actor.cpp

@@ -18,6 +18,10 @@
  * limitations under the License.
  */
 
+#ifdef ADDRESS_SANITIZER
+#include <sanitizer/lsan_interface.h>
+#endif
+
 #include "fdbclient/FDBOptions.g.h"
 #include "fdbclient/FDBTypes.h"
 #include "fdbclient/GenericManagementAPI.actor.h"
@@ -2763,6 +2767,11 @@ template <class T>
 THREAD_FUNC runSingleAssignmentVarTest(void* arg) {
 	noUnseed = true;
 
+// This test intentionally leaks memory
+#ifdef ADDRESS_SANITIZER
+	__lsan::ScopedDisabler disableLeakChecks;
+#endif
+
 	volatile bool* done = (volatile bool*)arg;
 	try {
 		for (int i = 0; i < 25; ++i) {