sparse: shorten try..except block in updateconfig()

It now only covers refreshwdir(). This is what importfromfiles()
does. I think it is the more appropriate behavior.

mercurial/sparse.py

@@ -599,7 +599,6 def updateconfig(repo, pats, opts, inclu
         oldinclude, oldexclude, oldprofiles = parseconfig(repo.ui, raw)
         oldprofiles = set(oldprofiles)
 
-        try:
             if reset:
                 newinclude = set()
                 newexclude = set()
@@ -612,9 +611,8 def updateconfig(repo, pats, opts, inclu
             oldstatus = repo.status()
 
             if any(pat.startswith('/') for pat in pats):
-                repo.ui.warn(_('warning: paths cannot start with /, '
-                               'ignoring: %s\n') %
-                             ([pat for pat in pats if pat.startswith('/')]))
+            repo.ui.warn(_('warning: paths cannot start with /, ignoring: %s\n')
+                         % ([pat for pat in pats if pat.startswith('/')]))
             elif include:
                 newinclude.update(pats)
             elif exclude:
@@ -627,18 +625,22 def updateconfig(repo, pats, opts, inclu
                 newinclude.difference_update(pats)
                 newexclude.difference_update(pats)
 
-            writeconfig(repo, newinclude, newexclude, newprofiles)
-
-            fcounts = map(
-                len,
-                refreshwdir(repo, oldstatus, oldmatcher, force=force))
-
             profilecount = (len(newprofiles - oldprofiles) -
                             len(oldprofiles - newprofiles))
             includecount = (len(newinclude - oldinclude) -
                             len(oldinclude - newinclude))
             excludecount = (len(newexclude - oldexclude) -
                             len(oldexclude - newexclude))
+
+        # TODO clean up this writeconfig() + try..except pattern once we can.
+        # See comment in importfromfiles() explaining it.
+        writeconfig(repo, newinclude, newexclude, newprofiles)
+
+        try:
+            fcounts = map(
+                len,
+                refreshwdir(repo, oldstatus, oldmatcher, force=force))
+
             printchanges(repo.ui, opts, profilecount, includecount,
                          excludecount, *fcounts)
         except Exception: