[vala] libpq: Fix syntax error

[Luca Bruno <lucabru src gnome org>]

commit 3871485a24366fe4979deec6b4758a8da2db67d3
Author: Kyrylo Polezhaiev <polezhaiev ukr net>
Date:   Tue Apr 29 15:05:58 2014 +0300

    libpq: Fix syntax error
    
    Fixes bug 729177

 vapi/libpq.vapi |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/vapi/libpq.vapi b/vapi/libpq.vapi
index 10d6a18..ee1a672 100644
--- a/vapi/libpq.vapi
+++ b/vapi/libpq.vapi
@@ -336,7 +336,7 @@ namespace Postgres {
                [CCode (cname = "PQisnonblocking")]
                public int is_non_blocking ();
 
-               [CCode (cname = "PQping"]
+               [CCode (cname = "PQping")]
                public Ping ping();
                 
                [CCode (cname = "PQpingParams")]