free_port: fixup

slapos/recipe/free_port.py

@@ -48,16 +48,14 @@ class Recipe(GenericBaseRecipe):
     # requested service itself.
     # If this check isn't done, a new port would be picked for every upgrade
     # of the software release
-    try:
-      port = self.getValueFromPreviousRun(name, 'port')
-      # Port can be 0 in case of upgrade: some old service still runs on port,
-      # so 0 is returned by default. Then, on next run, this recipe is processed
-      # again until a correct value is returned
-      if port != '0':
-        self.options['port'] = port
-        return
-    except (IOError, ConfigParser.NoSectionError, ConfigParser.NoOptionError):
-      pass
+    port = self.getValueFromPreviousRun(name, 'port')
+
+    # Port can be 0 in case of upgrade: some old service still runs on port,
+    # so 0 is returned by default. Then, on next run, this recipe is processed
+    # again until a correct value is returned
+    if port != '0':
+      self.options['port'] = port
+      return
 
     # Otherwise, let's find one
     self.minimum = int(options.get('minimum', 1024))