bitbake: utils: avoid printing traceback on ExpansionError during parsing

If an ExpansionError occurs during better_exec() we should just raise it
instead of printing the traceback, so that recipe errors (such as broken
URLs in SRC_URI) are more easily comprehensible.

(Bitbake rev: 5b0da8932c318813138c113d2bb20498145dbd42)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/utils.py

@@ -357,6 +357,8 @@ def better_exec(code, context, text = None, realfile = "<code>"):
     except bb.BBHandledException:
         # Error already shown so passthrough
         raise
+    except bb.data_smart.ExpansionError:
+        raise
     except Exception as e:
         (t, value, tb) = sys.exc_info()