rpm --import url shows non-specific error message when curl is not available

[andrii-suse]

Snippet below first shows that import command works successfully, then it shows generic error message when curl is uninstalled from the system

# rpm --import https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
# echo $?
0
# rpm -e curl
# rpm --import https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
error: https://yum.mariadb.org/RPM-GPG-KEY-MariaDB: import read failed(2).
# rpm -vvv --import https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
ufdio:       1 reads,    19077 total bytes in 0.000005 secs
error: https://yum.mariadb.org/RPM-GPG-KEY-MariaDB: import read failed(2).

rpm should e.g. show exact failing command, at least when verbosity is increased.