[PATCH] Fix NULL checking in check_TSCurrentConfig()

The correct NULL check should use `*newval'; `newval' must be non-null.
---
src/backend/utils/cache/ts_cache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/utils/cache/ts_cache.c b/src/backend/utils/cache/ts_cache.c
index e688b1a..65a8ad7 100644
--- a/src/backend/utils/cache/ts_cache.c
+++ b/src/backend/utils/cache/ts_cache.c
@@ -642,7 +642,7 @@ check_TSCurrentConfig(char **newval, void **extra, GucSource source)
free(*newval);
*newval = strdup(buf);
pfree(buf);
- if (!newval)
+ if (!*newval)
return false;
}

--
1.7.10.4