[gimp] libgimpbase: Cast fd to FILE* before calling fileno

[Jehan Pagès <jehanp src gnome org>]

commit 7b6756af8eaf6293d3fbe105cd13b6015188a084
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Fri Feb 16 03:37:21 2018 +0800

    libgimpbase: Cast fd to FILE* before calling fileno
    
    It is required if the system implements fileno as a macro doing direct
    struct member access.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=793494

 libgimpbase/gimputils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgimpbase/gimputils.c b/libgimpbase/gimputils.c
index 77a5312..b68c51a 100644
--- a/libgimpbase/gimputils.c
+++ b/libgimpbase/gimputils.c
@@ -1240,7 +1240,7 @@ gimp_print_stack_trace (const gchar *prog_name,
            * In some cases, this is necessary, especially during
            * segfault-type crashes.
            */
-          backtrace_symbols_fd (bt_buf, n_symbols, fileno (fd));
+          backtrace_symbols_fd (bt_buf, n_symbols, fileno ((FILE *) fd));
         }
       stack_printed = (n_symbols > 0);
     }