[PATCH 2 of 4 evolve-ext] evolve: renaming of a variable

[Laurent Charignon]

# HG changeset patch
# User Laurent Charignon <lcharignon at fb.com>
# Date 1430427607 25200
#      Thu Apr 30 14:00:07 2015 -0700
# Node ID 48f78feb0b47b6a9725bbe6b28503b3f65c0cebf
# Parent  f113636997660b807c36cf1d0a06b76d53ada1a4
evolve: renaming of a variable

tro was not a really descriptive name, replacing it with nexttrouble.

diff --git a/hgext/evolve.py b/hgext/evolve.py
--- a/hgext/evolve.py
+++ b/hgext/evolve.py
@@ -1252,10 +1252,6 @@
         graftcmd = commands.table['graft'][0]
         return graftcmd(ui, repo, old_obsolete=True, **{'continue': True})
 
-    tro = _picknexttroubled(ui, repo, anyopt or allopt)
-    if tro is None:
-        return handlenotrouble(ui, repo, startnode, dryrunopt)
-
     def progresscb():
         if allopt:
             ui.progress('evolve', seen, unit='changesets', total=count)
@@ -1263,14 +1259,20 @@
     seen = 1
     count = allopt and _counttroubled(ui, repo) or 1
 
-    while tro is not None:
+    nexttrouble = _picknexttroubled(ui, repo, anyopt or allopt)
+ 
+    # No trouble to resolve
+    if not nexttrouble:
+        return handlenotrouble(ui, repo, startnode, dryrunopt)
+
+    while nexttrouble is not None:
         progresscb()
         wlock = lock = tr = None
         try:
             wlock = repo.wlock()
             lock = repo.lock()
             tr = repo.transaction("evolve")
-            result = _evolveany(ui, repo, tro, dryrunopt, confirmopt,
+            result = _evolveany(ui, repo, nexttrouble, dryrunopt, confirmopt,
                                 progresscb=progresscb)
             tr.close()
         finally:
@@ -1282,7 +1284,7 @@
                 ui.status(_('working directory is now at %s\n') % repo['.'])
             return result
         progresscb()
-        tro = _picknexttroubled(ui, repo, anyopt or allopt)
+        nexttrouble = _picknexttroubled(ui, repo, anyopt or allopt)
 
     if allopt:
         ui.progress('evolve', None)