Optimise a few hints.search calls

Signed-off-by: Niels Thykier <niels@thykier.net>

britney.py

@@ -1032,7 +1032,7 @@ class Britney(object):
         # version in testing, then stop here and return False
         # (as a side effect, a removal may generate such excuses for both the source
         # package and its binary packages on each architecture)
-        for hint in [x for x in self.hints.search('remove', package=src) if source_t[VERSION] == x.version]:
+        for hint in self.hints.search('remove', package=src, version=source_t[VERSION]):
             excuse.addhtml("Removal request by %s" % (hint.user))
             excuse.addhtml("Trying to remove package, not update it")
             excuse.addhtml("Not considered")
@@ -1435,7 +1435,7 @@ class Britney(object):
             update_candidate = False
 
         # check if there is a `force' hint for this package, which allows it to go in even if it is not updateable
-        forces = [x for x in self.hints.search('force', package=src) if source_u[VERSION] == x.version]
+        forces = self.hints.search('force', package=src, version=source_u[VERSION])
         if forces:
             excuse.dontinvalidate = True
         if not update_candidate and forces:

policies/policy.py

@@ -160,8 +160,8 @@ class AgePolicy(BasePolicy):
         age_info['age-requirement'] = min_days
         age_info['current-age'] = days_old
 
-        for age_days_hint in [x for x in self.hints.search('age-days', package=source_name)
-                              if source_data_srcdist[VERSION] == x.version]:
+        for age_days_hint in self.hints.search('age-days', package=source_name,
+                                               version=source_data_srcdist[VERSION]):
             new_req = int(age_days_hint.days)
             age_info['age-requirement-reduced'] = {
                 'new-requirement': new_req,
@@ -170,8 +170,8 @@ class AgePolicy(BasePolicy):
             min_days = new_req
 
         if days_old < min_days:
-            urgent_hints = [x for x in self.hints.search('urgent', package=source_name)
-                            if source_data_srcdist[VERSION] == x.version]
+            urgent_hints = self.hints.search('urgent', package=source_name,
+                                             version=source_data_srcdist[VERSION])
             if urgent_hints:
                 age_info['age-requirement-reduced'] = {
                     'new-requirement': 0,