[contrib] validate_failures.py: Use exit code "2" to indicate regression

... in the results.  Python exits with code "1" on exceptions and
internal errors, which we use to detect failure to parse results.

contrib/ChangeLog:

	* testsuite-management/validate_failures.py (Main): Use exit code "2"
	to indicate regression.

diff --git a/contrib/testsuite-management/validate_failures.py b/contrib/testsuite-management/validate_failures.py
index f2d7b099d782e6286996f63b5617335d9c4c91f1..c4b9fc377ce2ca4a53e2ab31c975a6eaac1653bd 100755 (executable)
--- a/contrib/testsuite-management/validate_failures.py
+++ b/contrib/testsuite-management/validate_failures.py
@@ -645,7 +645,7 @@ def Main(argv):
   if retval:
     return 0
   else:
-    return 1
+    return 2
 
 
 if __name__ == '__main__':