[15] RFR (T): 8238762: Optimized build is broken

[Vladimir Ivanov]

https://bugs.openjdk.java.net/browse/JDK-8238762

Trivial fix for a build problem with optimized build:

diff --git a/src/hotspot/share/runtime/mutex.hpp 
b/src/hotspot/share/runtime/mutex.hpp
--- a/src/hotspot/share/runtime/mutex.hpp
+++ b/src/hotspot/share/runtime/mutex.hpp
@@ -81,7 +81,7 @@
    char _name[MUTEX_NAME_LEN];            // Name of mutex/monitor

    // Debugging fields for naming, deadlock detection, etc. (some only 
used in debug mode)
-#ifdef ASSERT
+#ifndef PRODUCT
    bool    _allow_vm_block;
    int     _rank;                 // rank (to avoid/detect potential 
deadlocks)
    Mutex*  _next;                 // Used by a Thread to link up owned 
locks

Best regards,
Vladimir Ivanov