solenv concat-deps: Drop another cast to existing type

`array` already has type `struct hash_elem**`, so there
is no need to cast to that.

Change-Id: I2245630e1efd0a4292819ac6d650d41da2155a7a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/209836
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

solenv/bin/concat-deps.c

@@ -509,7 +509,7 @@ static void hash_resize(struct hash* hash)
             }
         }
         free(hash->array);
-        hash->array = (struct hash_elem**)array;
+        hash->array = array;
     }
     else
     {