bitbake: knotty/msg: Avoid usage of curses initscr/endwin to avoid terminal corruption

Using curses initscr/endwin causes screen corruption if for example you
suspend bitbake and resume it. This changes the code to use a less
invasive approach to determining colour availability on the terminal.

(Bitbake rev: 4548a8f037eaf8d47a77052acc3e9ec264ac41e0)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/msg.py

@@ -106,17 +106,7 @@ class BBLogFormatter(logging.Formatter):
         return record
 
     def enable_color(self):
-        import curses
-        try:
-            win = None
-            win = curses.initscr()
-            if curses.has_colors():
-                self.color_enabled = True
-        except:
-            pass
-        finally:
-            if win is not None:
-                curses.endwin()
+        self.color_enabled = True
 
 class BBLogFilter(object):
     def __init__(self, handler, level, debug_domains):