Minor code improvement to estimate_path_cost_size in postgres_fdw

[Tatsuro Yamada]

Hi,

The declaration of estimate_path_cost_size uses baserel, but
the actual definition uses foreignrel. It would be better to sync.

Please find attached a patch.

Tatsuro Yamada
NTT Open Source Software Center

diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c
index 7992ba5..f7da056 100644
--- a/contrib/postgres_fdw/postgres_fdw.c
+++ b/contrib/postgres_fdw/postgres_fdw.c
@@ -353,7 +353,7 @@ static void postgresGetForeignUpperPaths(PlannerInfo *root,
  * Helper functions
  */
 static void estimate_path_cost_size(PlannerInfo *root,
-						RelOptInfo *baserel,
+						RelOptInfo *foreignrel,
 						List *join_conds,
 						List *pathkeys,
 						double *p_rows, int *p_width,