fuzz: Link all targets once

src/test/fuzz/pow.cpp

@@ -15,12 +15,12 @@
 #include <string>
 #include <vector>
 
-void initialize()
+void initialize_pow()
 {
     SelectParams(CBaseChainParams::MAIN);
 }
 
-void test_one_input(const std::vector<uint8_t>& buffer)
+FUZZ_TARGET_INIT(pow, initialize_pow)
 {
     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
     const Consensus::Params& consensus_params = Params().GetConsensus();