[gnumeric] ssconvert: propagate error code all the way to exit.

[Morten Welinder <mortenw src gnome org>]

commit 89f49d11a7f3335e712a6d22f749821cb779eaf0
Author: Morten Welinder <terra gnome org>
Date:   Thu Jun 11 20:01:17 2020 -0400

    ssconvert: propagate error code all the way to exit.

 src/ssconvert.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/ssconvert.c b/src/ssconvert.c
index 68502f1a3..6b242cba2 100644
--- a/src/ssconvert.c
+++ b/src/ssconvert.c
@@ -1246,8 +1246,10 @@ convert (char const *inarg, char const *outarg, char const *mergeargs[],
        }
 
        if (mergeargs != NULL) {
-               if (merge (wb, mergeargs, fo, io_context, cc))
+               if (merge (wb, mergeargs, fo, io_context, cc)) {
+                       res = TRUE;
                        goto out;
+               }
        }
 
        if (ssconvert_goal_seek) {