* nix-worker: clean up the temporary root for the worker processes

in /nix/var/nix/temproots.

src/libmain/shared.cc

@@ -70,15 +70,6 @@ static unsigned int getIntArg(const string & opt,
 }
 
 
-struct RemoveTempRoots 
-{
-    ~RemoveTempRoots()
-    {
-        removeTempRoots();
-    }
-};
-
-
 void initDerivationsHelpers();
 
 
@@ -99,6 +90,12 @@ static void closeStore()
 }
 
 
+RemoveTempRoots::~RemoveTempRoots()
+{
+    removeTempRoots();
+}
+
+
 /* Initialize and reorder arguments, then call the actual argument
    processor. */
 static void initAndRun(int argc, char * * argv)