Fix syntax error

trans/models/unit.py

@@ -957,7 +957,7 @@ class Unit(models.Model):
         Updates flag counting failing checks.
         '''
         has_failing_check = len(self.active_checks()) > 0
-        if has_failing_check != self.has_failing_check
+        if has_failing_check != self.has_failing_check:
             self.has_failing_check = has_failing_check
             self.save()
 
@@ -972,7 +972,7 @@ class Unit(models.Model):
         Updates flag counting suggestions.
         '''
         has_suggestion = len(self.suggestions()) > 0
-        if has_suggestion != self.has_suggestion
+        if has_suggestion != self.has_suggestion:
             self.has_suggestion = has_suggestion
             self.save()
 
@@ -984,7 +984,7 @@ class Unit(models.Model):
         Updates flag counting comments.
         '''
         has_comment = len(self.get_comments()) > 0
-        if has_comment != self.has_comment
+        if has_comment != self.has_comment:
             self.has_comment = has_comment
             self.save()