We introduced helper macros to simplify loading functions dynamically. Might just as well use them. This also side-steps a compiler warning when building with GCC v8.x: it would complain about casting between incompatible function pointers. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>