- remove "nasal-dir-initialized" signal node after use. This code is executed

before the property tree is stored away for reinit, so the signal would
  be emitted again on reset.
- fix inconsistent style that sneaked in with a previous patch

src/Scripting/NasalSys.cxx

@@ -426,7 +426,12 @@ void FGNasalSys::init()
         loadModule(fullpath, file.base().c_str());
     }
     ulCloseDir(dir);
-    fgSetBool("/sim/signals/nasal-dir-initialized", true);
+
+    // set signal and remove node to avoid restoring at reinit
+    const char *s = "nasal-dir-initialized";
+    SGPropertyNode *signal = fgGetNode("/sim/signals", true);
+    signal->setBoolValue(s, true);
+    signal->removeChildren(s);
 
     // Pull scripts out of the property tree, too
     loadPropertyScripts();