[PATCH] fix building on musl

musl 1.2.5 removed basename from string.h and only kept it in libgen.h: https://git.musl-libc.org/cgit/musl/commit/?id=725e17ed6dff4d0cd22487bb64470881e86a92e7
---
 daemon/automount.c    | 20 +++++++++++++++-----
 daemon/master.c       |  1 +
 modules/lookup_file.c |  1 +
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/daemon/automount.c b/daemon/automount.c
index 474b29a..5256426 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -21,6 +21,7 @@
 
 #include <dirent.h>
 #include <getopt.h>
+#include <libgen.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -2538,12 +2539,21 @@ int main(int argc, char *argv[])
 
 		lookup_nss_read_master(master_list, 0);
 		if (type) {
-			const char *map = basename(name);
-			if (!map)
-				printf("%s: invalid map name %s\n",
+			const char *map = NULL;
+			char *name_dup = strdup(name);
+			if (!name_dup) {
+				printf("%s: failed to copy name %s for parsing\n",
 					program, name);
-			else
-				dump_map(master_list, type, map);
+			} else {
+				map = basename(name_dup);
+				if (!map)
+					printf("%s: invalid map name %s\n",
+						program, name);
+				else
+					dump_map(master_list, type, map);
+				free(name_dup);
+				name_dup = NULL;
+			}
 		} else
 			master_show_mounts(master_list);
 
diff --git a/daemon/master.c b/daemon/master.c
index f2c11e9..1455e40 100644
--- a/daemon/master.c
+++ b/daemon/master.c
@@ -21,6 +21,7 @@
 #include <string.h>
 #include <memory.h>
 #include <limits.h>
+#include <libgen.h>
 #include <signal.h>
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 99f2e21..4914395 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -15,6 +15,7 @@
 
 #include <stdio.h>
 #include <malloc.h>
+#include <libgen.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-- 
2.45.3