ash: fix another bit of var_bash4 bug

But it _still_ doesn't pass! quoted case is a tough nut to crack

function                                             old     new   delta
redirect                                            1281    1286      +5
subevalvar                                          1141    1142      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-vars/var_bash4.right b/shell/ash_test/ash-vars/var_bash4.right
index 2d4e45b..600e853 100644
--- a/shell/ash_test/ash-vars/var_bash4.right
+++ b/shell/ash_test/ash-vars/var_bash4.right
@@ -11,7 +11,7 @@
 
 Source:        a\bc
 Replace str:   _\\_\z_
-Pattern:       single backslash and b: "replace literal b"
+Pattern:       single backslash and b: "replace b"
 In assignment: a\_\_z_c
 Unquoted:      a\_\_z_c
 Quoted:        a\_\_\z_c
diff --git a/shell/ash_test/ash-vars/var_bash4.tests b/shell/ash_test/ash-vars/var_bash4.tests
index a6e98fd..d547061 100755
--- a/shell/ash_test/ash-vars/var_bash4.tests
+++ b/shell/ash_test/ash-vars/var_bash4.tests
@@ -30,7 +30,7 @@
 echo 'Source:       ' "$v"
 echo 'Replace str:  ' '_\\_\z_'
 
-echo 'Pattern:      ' 'single backslash and b: "replace literal b"'
+echo 'Pattern:      ' 'single backslash and b: "replace b"'
 r=${v/\b/_\\_\z_}
 echo 'In assignment:' "$r"
 echo 'Unquoted:     '  ${v/\b/_\\_\z_}