fixed undoPatch

patches/node.v6.5.0.patch

@@ -348,7 +348,7 @@
  
 --- node/src/node_javascript.cc
 +++ node/src/node_javascript.cc
-@@ -31,8 +31,46 @@
+@@ -31,8 +31,47 @@
                env->isolate(), reinterpret_cast<const char*>(native.source),
                NewStringType::kNormal, native.source_len).ToLocalChecked();
        target->Set(name, source);
@@ -366,6 +366,7 @@
 +    "  // when THIS array (mb?) found as plain bytes\n" \
 +    "  var start = me.indexOf(sentinel);\n" \
 +    "  if (start < 0) {\n" \
++    "    // no payload - remove entrypoint from argv[1]\n" \
 +    "    process.argv.splice(1, 1);\n" \
 +    "    return undefined;\n" \
 +    "  }\n" \
@@ -385,7 +386,7 @@
 +    "}\n" \
 +    "\n" \
 +    "var r = readOverlay();\n" \
-+    "if (r && r.undoPatch) {\n" \
++    "if (!r || r.undoPatch) {\n" \
 +    "  // fallback to plain node. need to revert patch to node/lib/module.js\n" \
 +    "  require('fs').internalModuleStat =     process.binding('fs').internalModuleStat;\n" \
 +    "  require('fs').internalModuleReadFile = process.binding('fs').internalModuleReadFile;\n" \