t7800-difftool: fix the effectless GIT_DIFFTOOL_PROMPT test

GIT_DIFFTOOL_PROMPT doesn't have any effect if overridden with --prompt.

Signed-off-by: Markus Heidelberg <redacted>
Signed-off-by: Junio C Hamano <redacted>

diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index ebdccf9a1eb9f9bb4918fc5adee8bdb8fd682608..fff6a6d0eab4b27d5bc7ff4636913cb10296ab7b 100755 (executable)
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -136,7 +136,7 @@ test_expect_success 'GIT_DIFFTOOL_PROMPT variable' '
        GIT_DIFFTOOL_PROMPT=true &&
        export GIT_DIFFTOOL_PROMPT &&
 
-       prompt=$(echo | git difftool --prompt branch | tail -1) &&
+       prompt=$(echo | git difftool branch | tail -1) &&
        prompt_given "$prompt" &&
 
        restore_test_defaults