various: fix memory leaks

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

src/dhcpd-pools.c

@@ -178,6 +178,7 @@ int main(int argc, char **argv)
 					config.output_limit[i] =
 					    optarg[i] - '0';
 				} else {
+					clean_up();
 					errx(EXIT_FAILURE,
 					     "main: output mask `%s' is illegal",
 					     optarg);
@@ -242,6 +243,7 @@ int main(int argc, char **argv)
 		output_analysis = output_csv;
 		break;
 	default:
+		clean_up();
 		errx(EXIT_FAILURE, "main: unknown output format `%c'",
 		     config.output_format[0]);
 	}

src/hash.c

@@ -109,6 +109,7 @@ void delete_all_leases(void)
 {
 	struct leases_t *l, *tmp;
 	HASH_ITER(hh, leases, l, tmp) {
+		free(l->ethernet);
 		HASH_DEL(leases, l);
 		free(l);
 	}

src/other.c

@@ -411,16 +411,18 @@ void clean_up(void)
 	if (fflush(NULL)) {
 		warn("clean_up: fflush");
 	}
-	num_shared_networks++;
-	for (i = 0; i < num_shared_networks; i++) {
-		free((shared_networks + i)->name);
-	}
 	free(config.dhcpdconf_file);
 	free(config.dhcpdlease_file);
 	free(config.output_file);
 	free(ranges);
 	delete_all_leases();
-	free(shared_networks);
+	if (shared_networks) {
+		num_shared_networks++;
+		for (i = 0; i < num_shared_networks; i++) {
+			free((shared_networks + i)->name);
+		}
+		free(shared_networks);
+	}
 }
 
 /*! \brief A version printing. */

src/sort.c

@@ -213,6 +213,7 @@ comparer_t field_selector(char c)
 	case 'e':
 		return comp_tcperc;
 	default:
+		clean_up();
 		warnx("field_selector: unknown sort order `%c'", c);
 		errx(EXIT_FAILURE, "Try `%s --help' for more information.",
 		     program_name);