Fix TypeError when building Bashed Patch

Initialize cached_ini_info to None by default, and swap out the try block for a check.
Tuple full of Nones would not cause a TypeError here, but instead down the road leading to a crash.

Mopy/bash/bosh/__init__.py

@@ -900,7 +900,7 @@ def getStringsPaths(self, lang):
     # patch BSA (which only exists in SSE) will always load after the interface
     # BSA and hence should win all conflicts (including strings).
     _bsa_heuristics = list(enumerate((u'main', u'patch', u'interface')))
-    def _find_string_bsas(self, cached_ini_info=(None, None, None)):
+    def _find_string_bsas(self, cached_ini_info=None):
         """Return a list of BSAs to get strings files from. Note that this is
         *only* meant for strings files. It sorts the list in such a way as to
         prioritize files that are likely to contain the strings, instead of
@@ -3107,9 +3107,9 @@ def get_bsa_lo(self, for_plugins, cached_ini_info=None):
         :param cached_ini_info: Can contain the result of calling
             get_bsas_from_inis, in which case calling that (fairly expensive)
             method will be skipped."""
-        try:
+        if cached_ini_info:
             available_bsas, bsa_lo, bsa_cause = cached_ini_info
-        except TypeError: # cached_ini_info is None - fetch it from disk
+        else: # cached_ini_info is None - fetch it from disk
             available_bsas, bsa_lo, bsa_cause = self.get_bsas_from_inis()
         # BSAs loaded based on plugin name load in the middle of the pack
         for i, p in enumerate(for_plugins):