updated for version 7.3.831
Problem:    Clumsy to handle the situation that a variable does not exist.
Solution:   Add default value to getbufvar() et al. (Shougo Matsushita,
            Hirohito Higashi)
diff --git a/src/testdir/Make_amiga.mak b/src/testdir/Make_amiga.mak
index 19d8910..0e18992 100644
--- a/src/testdir/Make_amiga.mak
+++ b/src/testdir/Make_amiga.mak
@@ -32,7 +32,7 @@
 		test71.out test72.out test73.out test74.out test75.out \
 		test76.out test77.out test78.out test79.out test80.out \
 		test81.out test82.out test83.out test84.out test88.out \
-		test89.out test90.out
+		test89.out test90.out test91.out
 
 .SUFFIXES: .in .out
 
@@ -139,3 +139,4 @@
 test88.out: test88.in
 test89.out: test89.in
 test90.out: test90.in
+test91.out: test91.in