[PATCH v4 3/3] diff --submodule=diff: Don't print failure message twice

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When we fail to start a diff command inside a submodule, immediately
exit the routine rather than trying to finish the command and printing
a second message.

Signed-off-by: David Turner <dturner@xxxxxxxxxxxx>
---
 submodule.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/submodule.c b/submodule.c
index 8aeff95cfd..ab5f050f0e 100644
--- a/submodule.c
+++ b/submodule.c
@@ -720,8 +720,10 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
 		strvec_push(&cp.env_array, GIT_WORK_TREE_ENVIRONMENT "=.");
 	}
 
-	if (start_command(&cp))
+	if (start_command(&cp)) {
 		diff_emit_submodule_error(o, "(diff failed)\n");
+		goto done;
+	}
 
 	while (strbuf_getwholeline_fd(&sb, cp.out, '\n') != EOF)
 		diff_emit_submodule_pipethrough(o, sb.buf, sb.len);
-- 
2.11.GIT




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