Getting undefined reference errors when trying to build with make fuzz
Hi!

When I try to run `make fuzz` , I get these errors during the build:

```

/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_event_new':
(.text+0x162): undefined reference to `event_set'
/usr/bin/ld: (.text+0x16e): undefined reference to `event_base_set'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_timer_add':
(.text+0x1ef): undefined reference to `event_set'
/usr/bin/ld: (.text+0x1fc): undefined reference to `event_base_set'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_event_base_free':
(.text+0x275): undefined reference to `event_base_free'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `ub_default_event_base':
(.text+0x2f5): undefined reference to `event_base_new'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `ub_get_event_sys':
(.text+0x3c7): undefined reference to `event_get_version'
/usr/bin/ld: (.text+0x3dd): undefined reference to `event_base_get_method'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_event_del':
(.text+0x1b9): undefined reference to `event_del'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_timer_add':
(.text+0x215): undefined reference to `event_add'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_event_add':
(.text+0x239): undefined reference to `event_add'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_event_base_loopexit':
(.text+0x249): undefined reference to `event_base_loopexit'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_event_base_dispatch':
(.text+0x259): undefined reference to `event_base_dispatch'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_signal_del':
(.text+0x299): undefined reference to `event_del'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_timer_del':
(.text+0x2a9): undefined reference to `event_del'
/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libunbound.a(ub_event_pluggable.o): in function `my_signal_add':
(.text+0x2b9): undefined reference to `event_add'
collect2: error: ld returned 1 exit status
make[3]: *** [src/wallet/CMakeFiles/wallet_rpc_server.dir/build.make:153: bin/monero-wallet-rpc] Error 1
make[3]: Leaving directory '/home/oof/monero/build/Linux/master/fuzz'
make[2]: *** [CMakeFiles/Makefile2:3159: src/wallet/CMakeFiles/wallet_rpc_server.dir/all] Error 2
make[2]: Leaving directory '/home/oof/monero/build/Linux/master/fuzz'
make[1]: *** [Makefile:146: all] Error 2
make[1]: Leaving directory '/home/oof/monero/build/Linux/master/fuzz'
make: *** [Makefile:163: fuzz] Error 2


```

anyone know a good solution?