[PATCH 7 of 7] tests: conditionalize color output on abort

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbison at yahoo.com>
# Date 1534619704 14400
#      Sat Aug 18 15:15:04 2018 -0400
# Node ID 37ffffeb716e10bbc1d5052923b7d0ff14090485
# Parent  5acb07cbe379202759848a2cb9d5da24df01f1a1
tests: conditionalize color output on abort

This broke in afc4ad706f9c.  I'm not sure why other aborts don't need to be
conditionalized, but `hg help foo` does abort in red for both msys and cmd.exe.

diff --git a/tests/test-extension.t b/tests/test-extension.t
--- a/tests/test-extension.t
+++ b/tests/test-extension.t
@@ -1255,8 +1255,10 @@ Broken disabled extension and command:
   >     pass
   > EOF
   $ hg --config extensions.path=./path.py help foo > /dev/null
-  abort: no such help topic: foo
-  (try 'hg help --keyword foo')
+  abort: no such help topic: foo (no-windows !)
+  (try 'hg help --keyword foo') (no-windows !)
+  \x1b[0;31mabort: no such help topic: foo\x1b[0m (esc) (windows !)
+  \x1b[0;31m(try 'hg help --keyword foo')\x1b[0m (esc) (windows !)
   [255]
 
   $ cat > throw.py <<EOF
diff --git a/tests/test-help.t b/tests/test-help.t
--- a/tests/test-help.t
+++ b/tests/test-help.t
@@ -1481,8 +1481,10 @@ Test -e / -c / -k combinations
   $ hg help -c commit > /dev/null
   $ hg help -e -c commit > /dev/null
   $ hg help -e commit > /dev/null
-  abort: no such help topic: commit
-  (try 'hg help --keyword commit')
+  abort: no such help topic: commit (no-windows !)
+  (try 'hg help --keyword commit') (no-windows !)
+  \x1b[0;31mabort: no such help topic: commit\x1b[0m (esc) (windows !)
+  \x1b[0;31m(try 'hg help --keyword commit')\x1b[0m (esc) (windows !)
   [255]
 
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