[packages] alpine: fix build

alpine adds wrong path during configure (-L/usr/lib)
this leads to build fail on Archlinux
...
checking for setupterm in -lncurses... no
...
"configure: error: Terminfo/termcap not found"

since Debian uses a different path for "host libs" it shows no error

The wrong path is injected by the SSL test
thx jow for finding it

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>