HaikuDepot: Wrap dependency resolution in try/catch block.

- Ensure that any exceptions thrown by the package kit are caught
  and handled.

src/apps/haiku-depot/MainWindow.cpp

@@ -528,20 +528,19 @@ MainWindow::_RefreshPackageList()
 	}
 
 	// compute the OS package dependencies
+	try {
 		// create the solver
 		BSolver* solver;
 		status_t error = BSolver::Create(solver);
-	if (error != B_OK) {
+		if (error != B_OK)
-		printf("failed to create solver: %s\n", strerror(error));
+			throw BFatalErrorException(error, "Failed to create solver.");
-		return;
-	}
 
 		ObjectDeleter<BSolver> solverDeleter(solver);
 		BPath systemPath;
 		error = find_directory(B_SYSTEM_PACKAGES_DIRECTORY, &systemPath);
 		if (error != B_OK) {
-		printf("Unable to retrieve system packages directory: %s\n", strerror(error));
+			throw BFatalErrorException(error, "Unable to retrieve system "
-		return;
+				"packages directory.");
 		}
 
 		// add the "installed" repository with the given packages
@@ -574,26 +573,39 @@ MainWindow::_RefreshPackageList()
 		// solve
 		error = solver->VerifyInstallation();
 		if (error != B_OK) {
-		printf("failed to compute packages to install: %s\n", strerror(error));
+			throw BFatalErrorException(error, "Failed to compute packages to "
-		return;
+				"install.");
 		}
 
 		BSolverResult solverResult;
 		error = solver->GetResult(solverResult);
 		if (error != B_OK) {
-		printf("failed to get packages to install: %s\n", strerror(error));
+			throw BFatalErrorException(error, "Failed to retrieve system "
-		return;
+				"package dependency list.");
 		}
 
 		for (int32 i = 0; const BSolverResultElement* element
 				= solverResult.ElementAt(i); i++) {
 			BSolverPackage* package = element->Package();
 			if (element->Type() == BSolverResultElement::B_TYPE_INSTALL) {
-			PackageInfoMap::iterator it = systemInstalledPackages.find(package->Info().FileName());
+				PackageInfoMap::iterator it = systemInstalledPackages.find(
+					package->Info().FileName());
 				if (it != systemInstalledPackages.end())
 					it->second->SetSystemDependency(true);
 			}
 		}
+	} catch (BFatalErrorException ex) {
+		printf("Fatal exception occurred while resolving system dependencies: "
+			"%s, details: %s\n", strerror(ex.Error()), ex.Details().String());
+	} catch (BNothingToDoException) {
+		// do nothing
+	} catch (BException ex) {
+		printf("Exception occurred while resolving system dependencies: %s\n",
+			ex.Message().String());
+	} catch (...) {
+		printf("Unknown exception occurred while resolving system "
+			"dependencies.\n");
+	}
 }