Disable another CHECK when gAborting

Change-Id: I9a53d200c93ddb2dd95820e03040761fb2d5a752
diff --git a/src/mutex.cc b/src/mutex.cc
index 1cdbc4d..93b91e6 100644
--- a/src/mutex.cc
+++ b/src/mutex.cc
@@ -352,7 +352,7 @@
   bool result = (GetExclusiveOwnerTid() == SafeGetTid(self));
   if (kDebugLocking) {
     // Sanity debug check that if we think it is locked we have it in our held mutexes.
-    if (result && self != NULL && level_ != kMonitorLock) {
+    if (result && self != NULL && level_ != kMonitorLock && !gAborting) {
       CHECK_EQ(self->GetHeldMutex(level_), this);
     }
   }