* sync.h (muto::initforce): Force initialization even when name != NULL.

* grp.cc (pwdgrp::pwdgrp): Use initforce since the enclosing structure is
!NO_COPY.

winsup/cygwin/sync.h

@@ -28,6 +28,7 @@ public:
   void *tls;	/* Tls of lock owner. */
   // class muto *next;
 
+  muto *initforce (const char *s) {name = NULL; return init (s);}
   /* The real constructor. */
   muto *init (const char *) __attribute__ ((regparm (2)));