Dropping patch since it's unnecessary now.

patches/implicit_bool_cast.patch

@@ -1,14 +0,0 @@
-CRYPTO_get_locking_callback is defined as null in openssl
-so this is always true, but it fails to compile on musl 1.2.3
-as casting from null to bool is invalid
---- a/src/SSL.cpp
-+++ b/src/SSL.cpp
-@@ -33,7 +33,7 @@
- 	// If we detect that no locking callback is configured, we
- 	// have to set it up ourselves to allow multi-threaded use
- 	// of OpenSSL.
--	if (!CRYPTO_get_locking_callback()) {
-+	if (true) {
- 		SSLLocks::initialize();
- 	}
- }