Fix glocale problems on Windows

gramps/gen/utils/grampslocale.py

@@ -731,17 +731,17 @@ def check_available_translations(self, loc):
         # is cached so we don't have to query the file system every
         # time this function is called.
         if not hasattr(self, "languages"):
-            self.language = self.get_available_translations()
+            self.languages = self.get_available_translations()
 
         if not loc:
             return None
 
-        if loc[:5] in self.language:
+        if loc[:5] in self.languages:
             return loc[:5]
         # US English is the outlier, all other English locales want real English:
         if loc[:2] == "en" and loc[:5] != "en_US":
             return "en_GB"
-        if loc[:2] in self.language:
+        if loc[:2] in self.languages:
             return loc[:2]
         return None