shell: syncronize ash and hush heredoc1.tests

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

shell/ash_test/ash-heredoc/heredoc1.right

@@ -1 +1,5 @@
-./heredoc1.tests: line 3: syntax error: unexpected "then"
+qwe
+asd
+123
+456
+Ok

shell/ash_test/ash-heredoc/heredoc1.tests

@@ -1,3 +1,9 @@
-# We used to SEGV on this:
+cat <<000; cat <<www; cat <<eee
-
+000
-<<EOF; then <W
+qwe
+asd
+www
+123
+456
+eee
+echo Ok

shell/ash_test/ash-heredoc/heredoc8.right

@@ -0,0 +1 @@
+./heredoc8.tests: line 3: syntax error: unexpected "then"

shell/ash_test/ash-heredoc/heredoc8.tests

@@ -0,0 +1,3 @@
+# ash used to SEGV on this:
+
+<<EOF; then <W

shell/hush_test/hush-heredoc/heredoc8.right

@@ -0,0 +1 @@
+hush: syntax error at 'then'

shell/hush_test/hush-heredoc/heredoc8.tests

@@ -0,0 +1,3 @@
+# ash used to SEGV on this:
+
+<<EOF; then <W