Fix compilation error on 390.

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@190502 13f79535-47bb-0310-9956-ffa450edef68

src/xercesc/util/Platforms/OS390/OS390PlatformUtils.cpp

@@ -958,7 +958,7 @@ unsigned long XMLPlatformUtils::getCurrentMillis()
 //  locking mechanism is developed
 // -----------------------------------------------------------------------
 #ifndef APP_NO_THREADS
-typedef XMLHolder<pthread_mutex_t  PThreadMutexHolderType;
+typedef XMLHolder<pthread_mutex_t> PThreadMutexHolderType;
 typedef XMLHolder<int>             IntMutexHolderType;
 
 void XMLPlatformUtils::closeMutex(void* const mtxHandle)