Memory Management : Adjustment and fixes

Add release of several static singleton objects
Fix several minor memory leaks

ApplicationExeCode/RiaMain.cpp

@@ -18,6 +18,7 @@
 
 #include "RiaArgumentParser.h"
 #include "RiaLogging.h"
+#include "RiaMainTools.h"
 
 #ifdef ENABLE_GRPC
 #include "RiaGrpcConsoleApplication.h"
@@ -26,6 +27,7 @@
 #include "RiaConsoleApplication.h"
 #include "RiaGuiApplication.h"
 #endif
+
 #include "cvfProgramOptions.h"
 #include "cvfqtUtils.h"
 
@@ -66,8 +68,12 @@ int main( int argc, char* argv[] )
         return 1;
     }
 #endif
+    // Global initialization
     RiaLogging::loggerInstance()->setLevel( int( RILogLevel::RI_LL_DEBUG ) );
 
+    // Create feature manager before the application object is created
+    RiaMainTools::initializeSingletons();
+
     std::unique_ptr<RiaApplication> app( createApplication( argc, argv ) );
 
     cvf::ProgramOptions progOpt;
@@ -112,6 +118,9 @@ int main( int argc, char* argv[] )
         // Make sure project is closed to avoid assert and crash in destruction of widgets
         app->closeProject();
 
+        app.reset();
+        RiaMainTools::releaseSingletonAndFactoryObjects();
+
         return 0;
     }
     else if ( status == RiaApplication::ApplicationStatus::EXIT_WITH_ERROR )
@@ -147,6 +156,9 @@ int main( int argc, char* argv[] )
             throw;
         }
 
+        app.reset();
+        RiaMainTools::releaseSingletonAndFactoryObjects();
+
         return exitCode;
     }