From 6ea70851161e91e86b9f8836a332cdc18805c1b6 Mon Sep 17 00:00:00 2001
From: John Cupitt <jcupitt@gmail.com>
Date: Thu, 11 Apr 2019 17:14:24 +0100
Subject: [PATCH] missing ! on vips_dbuf_write_amp()

---
 libvips/iofuncs/dbuf.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/libvips/iofuncs/dbuf.c b/libvips/iofuncs/dbuf.c
index a7ff8181..230ca739 100644
--- a/libvips/iofuncs/dbuf.c
+++ b/libvips/iofuncs/dbuf.c
@@ -240,23 +240,23 @@ vips_dbuf_write_amp( VipsDbuf *dbuf, const char *str )
 			 * control characters, so we can use them -- thanks
 			 * electroly.
 			 */
-			if( vips_dbuf_writef( dbuf, "&#x%04x;", 0x2400 + *p ) )
+			if( !vips_dbuf_writef( dbuf, "&#x%04x;", 0x2400 + *p ) )
 			       return( FALSE );	
 		}
 		else if( *p == '<' ) {
-			if( vips_dbuf_write( dbuf, (guchar *) "&lt;", 4 ) )
+			if( !vips_dbuf_write( dbuf, (guchar *) "&lt;", 4 ) )
 				return( FALSE );
 		}
 		else if( *p == '>' ) {
-			if( vips_dbuf_write( dbuf, (guchar *) "&gt;", 4 ) )
+			if( !vips_dbuf_write( dbuf, (guchar *) "&gt;", 4 ) )
 				return( FALSE );
 		}
 		else if( *p == '&' ) {
-			if( vips_dbuf_write( dbuf, (guchar *) "&amp;", 5 ) )
+			if( !vips_dbuf_write( dbuf, (guchar *) "&amp;", 5 ) )
 				return( FALSE );
 		}
 		else  {
-			if( vips_dbuf_write( dbuf, (guchar *) p, 1 ) )
+			if( !vips_dbuf_write( dbuf, (guchar *) p, 1 ) )
 				return( FALSE );
 		}