prevent warning

diff --git a/plantuner.c b/plantuner.c
index f023d07..02b7101 100644 (file)
--- a/plantuner.c
+++ b/plantuner.c
@@ -272,7 +272,7 @@ IndexFilterShow(Oid* indexes, int nIndexes)
        len = 1 /* \0 */ + nIndexes * (2 * NAMEDATALEN + 2 /* ', ' */ + 1 /* . */);
        ptr = val = palloc(len);
 
-       *ptr ='\0';
+       *ptr =(char)'\0';
        for(i=0; i<nIndexes; i++)
        {
                char    *relname = get_rel_name(indexes[i]);