Fix typo: formats -> format.  (Only mattered in wide unicode builds.)
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index cc7769f..8a24a7e 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1812,7 +1812,7 @@
                 view->format = self->ob_descr->formats;
 #ifdef Py_UNICODE_WIDE
 		if (self->ob_descr->typecode == 'u') {
-			view->formats = "w";
+			view->format = "w";
 		}
 #endif
         }