build: use variable for OpenSSL dep path

deps/ncrypto/unofficial.gni

@@ -27,6 +27,6 @@ template("ncrypto_gn_build") {
     forward_variables_from(invoker, "*")
     public_configs = [ ":ncrypto_config" ]
     sources = gypi_values.ncrypto_sources
-    deps = [ "../openssl" ]
+    deps = [ "$node_openssl_path" ]
   }
 }

node.gni

@@ -10,6 +10,8 @@ declare_args() {
   # The location of V8, use the one from node's deps by default.
   node_v8_path = "$node_path/deps/v8"
 
+  node_openssl_path = "$node_path/deps/openssl"
+
   # The NODE_MODULE_VERSION defined in node_version.h.
   node_module_version = exec_script("$node_path/tools/getmoduleversion.py", [], "value")
 

unofficial.gni

@@ -185,7 +185,7 @@ template("node_gn_build") {
     }
     if (node_use_openssl) {
       deps += [ "deps/ncrypto" ]
-      public_deps += [ "deps/openssl" ]
+      public_deps += [ "$node_openssl_path" ]
       sources += gypi_values.node_crypto_sources
     }
     if (node_enable_inspector) {