Show complete command with args when ComputePatch fails

When Difference.ComputePatch() failed for some reason, only
the first part of the failed command was show with the error,
not all arguments.

old (simplified):
WARNING: failure running ['imgdiff', '-b', '/tmp/recovery-resource.dat']:

new:
WARNING: failure running ['imgdiff', '-b', '/tmp/recovery-resource.dat',
  '/tmp/tmpSsy_kf', '/tmp/tmpOMCXSn', '/tmp/tmpA3FtZw']:

Change-Id: Id8b498df3ed7934815430e4b4c2651ef4aa781c6

diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 124be6d..9e2b9a3 100755 (executable)
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1390,7 +1390,7 @@ class Difference(object):
 
       if err or p.returncode != 0:
         print("WARNING: failure running %s:\n%s\n" % (
-            diff_program, "".join(err)))
+            cmd, "".join(err)))
         self.patch = None
         return None, None, None
       diff = ptemp.read()