Merge 04625d39b189aacb689496abf4c7b48d1d979657 on remote branch

Change-Id: I200d4b67fefa09d43276f0044308407b1a3201c1
diff --git a/utils.py b/utils.py
index 65b2eee..c6e13c2 100644
--- a/utils.py
+++ b/utils.py
@@ -247,4 +247,7 @@
         if return_code != 0 or err.strip():
             raise IOError("`find %s -name '%s' %s` stdout: %s\nstderr: %s" %
                           (path, name_pattern, " ".join(options), out, err))
-        return out.strip().split("\n")
+
+        # Return empty file list when out is an empty string.
+        out = out.strip()
+        return out.split("\n") if out else []