qemuimagetest: fix erroneous ps errors when qemu couldn't be started

The helper script was printing an error to stdout when it couldn't find
any qemu child processes; output this error to stderr instead and
redirect stderr to /dev/null when running from qemuimage-testlib so that
QEMUPID is actually blank if there are no qemu instances found.

(From OE-Core rev: 7c2137a07cca8e1d40d3c8b4b2c6321d80f2b1de)

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

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/qemuimage-testlib-pythonhelper b/scripts/qemuimage-testlib-pythonhelper
index 2ca61ca06a..2c1f557778 100755
--- a/scripts/qemuimage-testlib-pythonhelper
+++ b/scripts/qemuimage-testlib-pythonhelper
@@ -34,7 +34,7 @@ if options.findqemu:
         commands[data[0]] = data[2]
 
     if options.findqemu not in pids:
-        print "No children found matching %s" % options.findqemu
+        sys.stderr.write("No children found matching %s" % options.findqemu)
         sys.exit(1)
 
     parents = []