[PATCH] am: close stream on error, but not stdin

[René Scharfe]

Avoid closing stdin, but do close an actual input file on error exit.

Found with Cppcheck.

Signed-off-by: Rene Scharfe <l....@web.de>
---
 builtin/am.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/builtin/am.c b/builtin/am.c
index f7a7a971fb..805f56cec2 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -762,14 +762,18 @@ static int split_mail_conv(mail_conv_fn fn, struct 
am_state *state,
                mail = mkpath("%s/%0*d", state->dir, state->prec, i + 1);
 
                out = fopen(mail, "w");
-               if (!out)
+               if (!out) {
+                       if (in != stdin)
+                               fclose(in);
                        return error_errno(_("could not open '%s' for writing"),
                                           mail);
+               }
 
                ret = fn(out, in, keep_cr);
 
                fclose(out);
-               fclose(in);
+               if (in != stdin)
+                       fclose(in);
 
                if (ret)
                        return error(_("could not parse patch '%s'"), *paths);
-- 
2.12.2