Merge "Don't check the stderr output from bsdiff/imgdiff" am: 07a4299182 am: 759dcbd1ed
am: 6b3337db4a

Change-Id: Ic845bffaa3e92b708188963ce7389e1b16b9045f
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index ebebd63..faadae9 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1385,7 +1385,7 @@
           p.kill()
           th.join()
 
-      if err or p.returncode != 0:
+      if p.returncode != 0:
         print("WARNING: failure running %s:\n%s\n" % (
             diff_program, "".join(err)))
         self.patch = None