check-code: extract windows glob warning message

it will be used often

contrib/check-code.py

@@ -89,6 +89,7 b' testfilters = ['
     (r"<<(\S+)((.|\n)*?\n\1)", rephere),
 ]
 
+winglobmsg = "use (glob) to match Windows paths too"
 uprefix = r"^  \$ "
 utestpats = [
   [
@@ -101,8 +102,7 b' utestpats = ['
      "explicit exit code checks unnecessary"),
     (uprefix + r'set -e', "don't use set -e"),
     (uprefix + r'\s', "don't indent commands, use > for continued lines"),
-    (r'^  saved backup bundle to \$TESTTMP.*\.hg$',
-     "use (glob) to match Windows paths too"),
+    (r'^  saved backup bundle to \$TESTTMP.*\.hg$', winglobmsg),
   ],
   # warnings
   [