Fixes mono repo install exit code check

Corrects the mono repo install exit code check to use the dedicated monorepoexitcode variable, ensuring accurate error detection.

Updates the exit trap to preserve the original exit status, preventing potential loss of information when handling script termination.

lgsm/modules/check_deps.sh

@@ -75,11 +75,11 @@ fn_install_mono_repo() {
 
 		# Run the mono repo install.
 		eval "${cmd}"
+		monorepoexitcode=$?
 
 		# Did Mono repo install correctly?
 		if [ "${monoautoinstall}" != "1" ]; then
-			exitcode=$?
-			if [ "${exitcode}" -ne 0 ]; then
+			if [ "${monorepoexitcode}" -ne 0 ]; then
 				fn_print_failure_nl "Unable to install Mono repository."
 				fn_script_log_fail "Unable to install Mono repository."
 			else

lgsm/modules/core_trap.sh

@@ -8,10 +8,12 @@
 moduleselfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"
 
 fn_exit_trap() {
+	local saved_exit_status=$?
+	echo -e ""
 	if [ -z "${exitcode}" ]; then
-		exitcode=$?
+		exitcode=${saved_exit_status}
 	fi
-	echo -e ""
+
 	if [ -z "${exitcode}" ]; then
 		exitcode=0
 	fi