From 0ae38fb2ea6e067da192be5b9827712712efbe0d Mon Sep 17 00:00:00 2001
From: Stephen Sanderson <stephen.sanderson@uq.edu.au>
Date: Mon, 1 Mar 2021 09:48:31 +1000
Subject: [PATCH] Fix return values of extract for pressure variables

---
 src/fix_nh.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fix_nh.cpp b/src/fix_nh.cpp
index 46afe7b2d7..49a469d296 100644
--- a/src/fix_nh.cpp
+++ b/src/fix_nh.cpp
@@ -1754,13 +1754,13 @@ void *FixNH::extract(const char *str, int &dim)
   } else if (tstat_flag && strcmp(str,"mtchain") == 0) {
     return &mtchain;
   } else if (pstat_flag && strcmp(str,"mpchain") == 0) {
-    return &mtchain;
+    return &mpchain;
   }
   dim=1;
   if (tstat_flag && strcmp(str,"eta") == 0) {
     return &eta;
   } else if (pstat_flag && strcmp(str,"etap") == 0) {
-    return &eta;
+    return &etap;
   } else if (pstat_flag && strcmp(str,"p_flag") == 0) {
     return &p_flag;
   } else if (pstat_flag && strcmp(str,"p_start") == 0) {