DTrace: Revert r249367

The following change from illumos brought caused DTrace to
pause in an interactive environment:

3026 libdtrace should set LD_NOLAZYLOAD=1 to help the pid provider

This was not detected during testing because it doesn't
affect scripts.

We shouldn't be changing the environment, especially since the
LD_NOLAZYLOAD option doesn't apply to our (GNU) ld.
Unfortunately the change from upstream was made in such a way
that it is very difficult to separate this change from the
others so, at least for now, it's better to just revert
everything.

Reference:
https://www.illumos.org/issues/3026

Reported by:	Navdeep Parhar and Mark Johnston

1 files changed, 2 insertions, 3 deletions

diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c
index 87211a2..df34eec 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c
@@ -21,7 +21,6 @@
 
 /*
  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
- * Copyright (c) 2012 by Delphix. All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -618,8 +617,8 @@ dt_printf(dtrace_hdl_t *dtp, FILE *fp, const char *format, ...)
 		size_t avail;
 
 		/*
-		 * Using buffered output is not allowed if a handler has
-		 * not been installed.
+		 * It's not legal to use buffered ouput if there is not a
+		 * handler for buffered output.
 		 */
 		if (dtp->dt_bufhdlr == NULL) {
 			va_end(ap);