From dfb7f8ff63418163e10ac4662c2c7a1f01dd1dd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B8rgen=20Kvalsvik?= <jokva@statoil.com>
Date: Wed, 28 Sep 2016 10:22:03 +0200
Subject: [PATCH] Stop report early if there are no wells

---
 opm/autodiff/WellStateFullyImplicitBlackoil.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/opm/autodiff/WellStateFullyImplicitBlackoil.hpp b/opm/autodiff/WellStateFullyImplicitBlackoil.hpp
index e739675f5..00cdd60ce 100644
--- a/opm/autodiff/WellStateFullyImplicitBlackoil.hpp
+++ b/opm/autodiff/WellStateFullyImplicitBlackoil.hpp
@@ -196,7 +196,9 @@ namespace Opm
             data::Wells res = WellState::report(pu);
 
             const int nw = this->numWells();
-            const int np = nw ? this->numPhases() : -1;
+            if( nw == 0 ) return res;
+            const int np = this->numPhases();
+
 
             using rt = data::Rates::opt;
             std::vector< rt > phs( np );