[PATCH 4 of 4] fetch: use single quotes around command hint

[timeless at gcc2-power8.osuosl.org]

# HG changeset patch
# User timeless <timeless at mozdev.org>
# Date 1460647211 0
#      Thu Apr 14 15:20:11 2016 +0000
# Node ID d37ba5c323520cbae960cc7961687ca4d2344fd2
# Parent  b83f18c6ba2beba79fab16898371d6371dd94c7f
# EXP-Topic quotes
# Available At bb://timeless/mercurial-crew
#              hg pull bb://timeless/mercurial-crew -r d37ba5c32352
fetch: use single quotes around command hint

Windows command lines use double quotes to quote arguments with spaces.
This change is in a series to unify around using single quotes around
commands, and double quotes around interior arguments.

diff -r b83f18c6ba2b -r d37ba5c32352 hgext/fetch.py
--- a/hgext/fetch.py	Thu Apr 14 15:19:57 2016 +0000
+++ b/hgext/fetch.py	Thu Apr 14 15:20:11 2016 +0000
@@ -61,7 +61,7 @@
         branchnode = None
     if parent != branchnode:
         raise error.Abort(_('working directory not at branch tip'),
-                         hint=_('use "hg update" to check out branch tip'))
+                         hint=_("use 'hg update' to check out branch tip"))
 
     wlock = lock = None
     try:
diff -r b83f18c6ba2b -r d37ba5c32352 tests/test-fetch.t
--- a/tests/test-fetch.t	Thu Apr 14 15:19:57 2016 +0000
+++ b/tests/test-fetch.t	Thu Apr 14 15:20:11 2016 +0000
@@ -339,7 +339,7 @@
   (branches are permanent and global, did you want a bookmark?)
   $ hg -R n2 fetch -m merge n1
   abort: working directory not at branch tip
-  (use "hg update" to check out branch tip)
+  (use 'hg update' to check out branch tip)
   [255]
 
 parent should be 0 (fetch did not update or merge anything)