Bugzilla bug #69496: set the minimum thread stack size on OpenVMS.

r=colin@theblakes.com.
Modified files: _openvms.h, ptthread.c

nsprpub/pr/include/md/_openvms.h

@@ -56,6 +56,7 @@
 #define _PR_VMBASE		0x30000000
 #define _PR_STACK_VMBASE	0x50000000
 #define _MD_DEFAULT_STACK_SIZE	131072L
+#define _MD_MINIMUM_STACK_SIZE	131072L
 
 /*
 ** This is not defined on OpenVMS. I believe its only used in GC code, and

nsprpub/pr/src/pthreads/ptthread.c

@@ -354,6 +354,9 @@ static PRThread* _PR_CreateThread(
 #endif /* !defined(_PR_DCETHREADS) */
 
     if (0 == stackSize) stackSize = (64 * 1024);  /* default == 64K */
+#ifdef _MD_MINIMUM_STACK_SIZE
+    if (stackSize < _MD_MINIMUM_STACK_SIZE) stackSize = _MD_MINIMUM_STACK_SIZE;
+#endif
     /*
      * Linux doesn't have pthread_attr_setstacksize.
      */