Unbreak the no-config-file case after last commit

Thinko in the last commit left LaunchBrowser potentially undefined in
the no-config-file case.

diff --git a/browser-switchboard b/browser-switchboard
index 8873c24..e922cee 100755 (executable)
--- a/browser-switchboard
+++ b/browser-switchboard
@@ -197,7 +197,7 @@ def readconfigfile(signalnum=None, frame=None):
             execfile(os.getenv("HOME", "/home/user") + "/.config/browser-proxy", globals())
         except:
             # No valid config file available
-            return
+            pass
     launcher.UpdateDefaultBrowser()
 
 setconfigdefaults()