[PATCH 3 of 8] blackbox: simplify the dirty check

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbison at yahoo.com>
# Date 1499574183 14400
#      Sun Jul 09 00:23:03 2017 -0400
# Node ID fca94a77d9cac7b60a44444b152fcb42ddb4dd1a
# Parent  09a3c95bdd28d00bc0071a4ade1ab31cf61262b2
blackbox: simplify the dirty check

Same idea (and possibly incorrect behavior) as the previous commit.

diff --git a/hgext/blackbox.py b/hgext/blackbox.py
--- a/hgext/blackbox.py
+++ b/hgext/blackbox.py
@@ -197,10 +197,8 @@
                     ctx = ui._bbrepo[None]
                     parents = ctx.parents()
                     rev = ('+'.join([hex(p.node()) for p in parents]))
-                    if (ui.configbool('blackbox', 'dirty') and (
-                        any(ui._bbrepo.status()) or
-                        any(ctx.sub(s).dirty() for s in ctx.substate)
-                    )):
+                    if (ui.configbool('blackbox', 'dirty') and
+                        ctx.dirty(missing=True, merge=False, branch=False)):
                         changed = '+'
                 if ui.configbool('blackbox', 'logsource'):
                     src = ' [%s]' % event