[gnome-continuous-yocto/gnomeostree-3.28-rocko: 3617/8267] bitbake: utils: Avoid traceback errors

[Emmanuele Bassi <ebassi src gnome org>]

commit 9d1d35068e0ebb082747114a7f07faaf5423dfa6
Author: Richard Purdie <richard purdie linuxfoundation org>
Date:   Wed Dec 7 12:07:06 2016 +0000

    bitbake: utils: Avoid traceback errors
    
    Avoid errors like:
    
    ERROR: Exception handler error: 'NoneType' object has no attribute 'decode'
    
    (Bitbake rev: 1aeb45abe56061f044c2347889c191d5256ff21f)
    
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 bitbake/lib/bb/utils.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index c4b25b5..9073f15 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -378,7 +378,7 @@ def _print_exception(t, value, tb, realfile, text, context):
 
         # If the exception is from spwaning a task, let's be helpful and display
         # the output (which hopefully includes stderr).
-        if isinstance(value, subprocess.CalledProcessError):
+        if isinstance(value, subprocess.CalledProcessError) and value.output:
             error.append("Subprocess output:")
             error.append(value.output.decode("utf-8", errors="ignore"))
     finally: