build: Fix building using system TLS and hiredis

The commit to add support to use the system hiredis entangled the TLS
and hiredis system ussage, but while related, the TLS support is not
conditional on whether we use the system hiredis.

Detangle them so that we link against the system OpenSSL libraries
again.

Fixes: commit 657229a

src/Makefile

@@ -359,6 +359,11 @@ else
 	FINAL_CFLAGS+= -I../deps/hiredis
 	FINAL_CXXFLAGS+= -I../deps/hiredis
 	FINAL_LIBS+=../deps/hiredis/libhiredis.a
+ifeq ($(BUILD_TLS),yes)
+	FINAL_LIBS += ../deps/hiredis/libhiredis_ssl.a
+endif
+endif
+
 ifeq ($(BUILD_TLS),yes)
 	FINAL_CFLAGS+=-DUSE_OPENSSL $(OPENSSL_CFLAGS)
 	FINAL_CXXFLAGS+=-DUSE_OPENSSL $(OPENSSL_CXXFLAGS)
@@ -375,8 +380,7 @@ ifeq ($(LIBCRYPTO_PKGCONFIG),0)
 else
 	LIBCRYPTO_LIBS=-lcrypto
 endif
-	FINAL_LIBS += ../deps/hiredis/libhiredis_ssl.a $(LIBSSL_LIBS) $(LIBCRYPTO_LIBS)
-endif
+	FINAL_LIBS += $(LIBSSL_LIBS) $(LIBCRYPTO_LIBS)
 endif
 
 ifndef V