Fix erroneous bool usage
https://github.com/openscenegraph/VirtualPlanetBuilder/commit/58fc4595f3548dd174640c27e901b9d3adedf14e
https://github.com/openscenegraph/VirtualPlanetBuilder/commit/22bf67f5a0d948b0c788652381d163a914e2fde3
--- src/vpb/MachinePool.cpp.orig
+++ src/vpb/MachinePool.cpp
@@ -630,7 +630,7 @@ bool MachinePool::read(const std::string& filename)
             if (fr.read("file",readFilename))
             {
                 read(readFilename);
-                ++itrAdvanced;
+                itrAdvanced = true;
             }
         
             if (fr.matchSequence("Machine {"))
--- src/vpb/TaskManager.cpp.orig
+++ src/vpb/TaskManager.cpp
@@ -854,7 +854,7 @@ bool TaskManager::readTasks(const std::string& filename)
             {
                 nextTaskSet();
                 readTasks(readFilename);
-                ++itrAdvanced;
+                itrAdvanced = true;
             }
 
             Task* task = readTask(fr, itrAdvanced);