[gnumeric] Tests: make t1105 work even if the overview sheet isn't active.

[Morten Welinder <mortenw src gnome org>]

commit 3f253a549a4e7e69101fd6f1402466d31fcbc151
Author: Morten Welinder <terra gnome org>
Date:   Tue Mar 13 18:38:18 2018 -0400

    Tests: make t1105 work even if the overview sheet isn't active.

 test/t1105-gamma.pl |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/test/t1105-gamma.pl b/test/t1105-gamma.pl
index 99a035c..cb6f8b2 100755
--- a/test/t1105-gamma.pl
+++ b/test/t1105-gamma.pl
@@ -7,4 +7,4 @@ use GnumericTest;
 
 my $file = "gamma.gnumeric";
 &message ("Check that $file evaluates correctly.");
-&test_sheet_calc ("$samples/$file", "B1", sub { /^[0-9.]+$/ && $_ > 11.5; });
+&test_sheet_calc ("$samples/$file", "Overview!B1", sub { /^[0-9.]+$/ && $_ > 11.5; });