NULL is not an ideal way to spell bool "false".

tglsfdc · tglsfdc · commit e4d905f772f7 · 2023-04-14T13:31:51.000-04:00
Thinko in commit 6633cfb, detected by buildfarm member hamerkop.
diff --git a/src/backend/libpq/be-secure-gssapi.c b/src/backend/libpq/be-secure-gssapi.c
@@ -752,7 +752,7 @@ bool
 be_gssapi_get_deleg(Port *port)
 {
 	if (!port || !port->gss)
-		return NULL;
+		return false;
 
 	return port->gss->delegated_creds;
 }

Original file line number	Diff line number	Diff line change
`@@ -752,7 +752,7 @@ bool`
`752`	`752`	`be_gssapi_get_deleg(Port *port)`
`753`	`753`	`{`
`754`	`754`	`if (!port \|\| !port->gss)`
`755`		`- return NULL;`
	`755`	`+ return false;`
`756`	`756`
`757`	`757`	`return port->gss->delegated_creds;`
`758`	`758`	`}`