Fail if ldap_set_option fails

clients/tools/ldapmodify.c

@@ -376,6 +376,7 @@ main( int argc, char **argv )
 	{
 		fprintf( stderr, "Could not set LDAP_OPT_PROTOCOL_VERSION %d\n",
 			version );
+		return EXIT_FAILURE;
 	}
 
 	if ( use_tls && ldap_start_tls_s( ld, NULL, NULL ) != LDAP_SUCCESS ) {

clients/tools/ldapmodrdn.c

@@ -365,6 +365,7 @@ main(int argc, char **argv)
 	{
 		fprintf( stderr, "Could not set LDAP_OPT_PROTOCOL_VERSION %d\n",
 			version );
+		return EXIT_FAILURE;
 	}
 
 	if ( use_tls && ldap_start_tls_s( ld, NULL, NULL ) != LDAP_SUCCESS ) {

clients/tools/ldappasswd.c

@@ -326,6 +326,7 @@ main( int argc, char *argv[] )
 
 	if(rc != LDAP_OPT_SUCCESS ) {
 		fprintf( stderr, "Could not set LDAP_OPT_PROTOCOL_VERSION %d\n", version );
+		return EXIT_FAILURE;
 	}
 
 	if ( use_tls && ldap_start_tls_s( ld, NULL, NULL ) != LDAP_SUCCESS ) {