__init_askpass() generates an askpass script whose echo statement
embeds a newline inside the quoted password: echo -n "PASSWORD
". Bash happily spans the quote over the newline, and the script
therefore prints the password followed by a trailing newline.
run_askpass() returns that output verbatim, so the password passed
on carries a newline and authentication fails.
Write the script so it prints the password and nothing else.
Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2
Signed-off-by: Jan Lindemann <jan@janware.com>