vercmp: don't choke on empty first version components

Signed-off-by: Chris Larson <chris_larson@mentor.com>

diff --git a/lib/bb/utils.py b/lib/bb/utils.py
index 19ca45d809d637b0c4f35c493e4ecc76b2972238..993f167e7811f6044fc4e4172c87d6865872c726 100644 (file)
--- a/lib/bb/utils.py
+++ b/lib/bb/utils.py
@@ -93,7 +93,7 @@ def vercmp(ta, tb):
     (ea, va, ra) = ta
     (eb, vb, rb) = tb
 
-    r = int(ea)-int(eb)
+    r = int(ea or 0) - int(eb or 0)
     if (r == 0):
         r = vercmp_part(va, vb)
     if (r == 0):