Fix newly introduced misspelling of existence in pg_buffercache.

Peter Geoghegan

diff --git a/contrib/pg_buffercache/pg_buffercache_pages.c b/contrib/pg_buffercache/pg_buffercache_pages.c
index d3b1ba3245d6853e42c10d421c71b44bb4b4903e..b1be98f470672fcd87d392d34360ddb2965442de 100644 (file)
--- a/contrib/pg_buffercache/pg_buffercache_pages.c
+++ b/contrib/pg_buffercache/pg_buffercache_pages.c
@@ -85,7 +85,7 @@ pg_buffercache_pages(PG_FUNCTION_ARGS)
 
        /*
         * To smoothly support upgrades from version 1.0 of this extension
-        * transparently handle the (non-)existance of the pinning_backends
+        * transparently handle the (non-)existence of the pinning_backends
         * column. We unfortunately have to get the result type for that... -
         * we can't use the result type determined by the function definition
         * without potentially crashing when somebody uses the old (or even