list_pretended: Abort if there are no packages

Exit the program if no usable packages are found

diff --git a/emerge-timer.py b/emerge-timer.py
index 1b5bb63e03436b97cae7a68a4d30119033d6b5e4..e195fbca727afd4aeecf64bd512fd0c2e9cf47c7 100755 (executable)
--- a/emerge-timer.py
+++ b/emerge-timer.py
@@ -326,6 +326,8 @@ def list_pretended(f):
                 if i in full_name:
                     packages.append((i, full_name[len(i):]))
 
+    if len(packages) == 0:
+        return
 
     print "This is how long these packages would take to emerge"