Ticket #11946: 11946-iscallable.diff

src/wp-includes/functions.php

@@ -2365 +2365 @@
          * we assume the file could not be validated.
          */
         try {
-                if ( ! is_callable( 'exif_imagetype' ) ) {
+                if ( is_callable( 'exif_imagetype' ) ) {
                         $mime = image_type_to_mime_type( exif_imagetype( $file ) );
                 } elseif ( function_exists( 'getimagesize' ) ) {
                         $imagesize = getimagesize( $file );