number is a program that translates the decimal numbers like this:
0.1 --> one tenth_.
0.2 --> two tenth_S.
This patch fix the test.

diff -Naur bsd-games-2.17/tests/number.-0.1 bsd-games-patch/tests/number.-0.1
--- bsd-games-2.17/tests/number.-0.1	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/tests/number.-0.1	2020-04-17 15:14:27.831098084 +0700
@@ -1,3 +1,3 @@
 minus
 one.
-tenths.
+tenth.
diff -Naur bsd-games-2.17/tests/number.-0.2 bsd-games-patch/tests/number.-0.2
--- bsd-games-2.17/tests/number.-0.2	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/tests/number.-0.2	2020-04-17 15:20:48.162336279 +0700
@@ -0,0 +1,3 @@
+minus
+two.
+tenths.
diff -Naur bsd-games-2.17/tests/number.test bsd-games-patch/tests/number.test
--- bsd-games-2.17/tests/number.test	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/tests/number.test	2020-04-17 15:20:22.774654155 +0700
@@ -36,6 +36,8 @@
 testno 1
 number/number -- -0.1 >test.out 2>&1 || failtest
 compare test.out tests/number.-0.1
+number/number -- -0.2 >test.out 2>&1 || failtest
+compare test.out tests/number.-0.2
 rm -f test.out
 
 testno 2