tests: fix implicit conversions in test-resolve-reloc
tests: fix implicit conversions in test-resolve-reloc

Fix implicit conversion of function pointer to void, and fix narrowing
of char constants that exceed range of signed char.

Signed-off-by: Nico Reißmann <d8255cca0642bdc1e6f9b45da9cb618d308e389b@gmail.com>

phate/jive,phate/jive,phate/jive