waf: ensure that MAKEFLAGS is set before parsing it

diff --git a/buildtools/wafsamba/samba_utils.py b/buildtools/wafsamba/samba_utils.py
index bffe98dcd80d3db6a638e213b7c8b393f2620465..3adf533b0e49071bc617a3d64310bca802bc0e86 100644 (file)
--- a/buildtools/wafsamba/samba_utils.py
+++ b/buildtools/wafsamba/samba_utils.py
@@ -473,6 +473,8 @@ def CHECK_MAKEFLAGS(bld):
     if not 'WAF_MAKE' in os.environ:
         return
     makeflags = os.environ.get('MAKEFLAGS')
+    if makeflags is None:
+        return
     jobs_set = False
     # we need to use shlex.split to cope with the escaping of spaces
     # in makeflags