Gracefully deal with 'stty size' failures.
Submitted upstream.

--- pybugz-0.6.11/bugz.py	2006-09-02 14:35:37.000000000 +0200
+++ pybugz-0.6.11/bugz.py	2014-05-05 15:17:03.000000000 +0200
@@ -288,7 +288,12 @@ def get_cols():
     stty = which('stty')
     if stty:
         row_cols = commands.getoutput("%s size" % stty)
-        rows, cols = map(int, row_cols.split())
+        try:
+            rows, cols = map(int, row_cols.split())
+        except:
+            # In some cases 'stty size' will just fail with
+            # "Inappropriate ioctl for device".
+            cols = DEFAULT_NUM_COLS
         return cols
     else:
         return DEFAULT_NUM_COLS
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