Remove an unnecessary blank line on the PQisBusy() comments

[Yugo Nagata]

Hi,

I’ve attached a very trivial patch that removes an unnecessary line
after the comments on PQisBusy(), just for consistency with the
surrounding code.

Regards,
Yugo Nagata

-- 
Yugo Nagata <nag...@sraoss.co.jp>

diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c
index 0b1e37ec30b..f885907607d 100644
--- a/src/interfaces/libpq/fe-exec.c
+++ b/src/interfaces/libpq/fe-exec.c
@@ -2037,7 +2037,6 @@ parseInput(PGconn *conn)
  * PQisBusy
  *	 Return true if PQgetResult would block waiting for input.
  */
-
 int
 PQisBusy(PGconn *conn)
 {