BUG/BUILD: revert accidental change in the makefile from latest SSL fix

Commit 0bed994 ("BUG/MINOR: ssl: correctly initialize ssl ctx for
invalid certificates") accidently left a change in the Makefile
resulting in -ldl being appended to the LDFLAGS. As reported by
Dmitry Sivachenko, this will break build on systems without libdl
such as FreeBSD.

This fix must be backported to 1.5.
(cherry picked from commit cd360cec7ac41aa3c1a7cbaf04559bf4d3666e25)
1 file changed