Change return to EXIT_FAILURE on cmdline parsing error

examples/fit-model-ceres.cpp

@@ -164,7 +164,7 @@ int main(int argc, char *argv[])
 	catch (const po::error& e) {
 		cout << "Error while parsing command-line arguments: " << e.what() << endl;
 		cout << "Use --help to display a list of options." << endl;
-		return EXIT_SUCCESS;
+		return EXIT_FAILURE;
 	}
 
 	google::InitGoogleLogging(argv[0]); // Ceres logging initialisation

examples/fit-model-simple.cpp

@@ -140,7 +140,7 @@ int main(int argc, char *argv[])
 	catch (const po::error& e) {
 		cout << "Error while parsing command-line arguments: " << e.what() << endl;
 		cout << "Use --help to display a list of options." << endl;
-		return EXIT_SUCCESS;
+		return EXIT_FAILURE;
 	}
 
 	// Load the image, landmarks, LandmarkMapper and the Morphable Model:

examples/fit-model.cpp

@@ -174,7 +174,7 @@ int main(int argc, char *argv[])
 	catch (const po::error& e) {
 		cout << "Error while parsing command-line arguments: " << e.what() << endl;
 		cout << "Use --help to display a list of options." << endl;
-		return EXIT_SUCCESS;
+		return EXIT_FAILURE;
 	}
 
 	// Load the image, landmarks, LandmarkMapper and the Morphable Model:

examples/generate-obj.cpp

@@ -76,7 +76,7 @@ int main(int argc, char *argv[])
 	catch (const po::error& e) {
 		cout << "Error while parsing command-line arguments: " << e.what() << endl;
 		cout << "Use --help to display a list of options." << endl;
-		return EXIT_SUCCESS;
+		return EXIT_FAILURE;
 	}
 
 	morphablemodel::MorphableModel morphable_model = morphablemodel::load_model(model_file.string());

utils/edgestruct-csv-to-json.cpp

@@ -90,7 +90,7 @@ int main(int argc, char *argv[])
 	catch (const po::error& e) {
 		cout << "Error while parsing command-line arguments: " << e.what() << endl;
 		cout << "Use --help to display a list of options." << endl;
-		return EXIT_SUCCESS;
+		return EXIT_FAILURE;
 	}
 
 	morphablemodel::EdgeTopology edge_info;

utils/scm-to-cereal.cpp

@@ -20,8 +20,6 @@
 #include "eos/morphablemodel/MorphableModel.hpp"
 #include "eos/morphablemodel/io/cvssp.hpp"
 
-#include "opencv2/core/core.hpp"
-
 #include "boost/program_options.hpp"
 #include "boost/filesystem.hpp"
 
@@ -69,7 +67,7 @@ int main(int argc, char *argv[])
 	catch (const po::error& e) {
 		cout << "Error while parsing command-line arguments: " << e.what() << endl;
 		cout << "Use --help to display a list of options." << endl;
-		return EXIT_SUCCESS;
+		return EXIT_FAILURE;
 	}
 
 	// Load the .scm Morphable Model and save it as cereal model: